Help with a DAX statement to analyze dates

[ScottWill]

I need Help writing the DAX statement equivalent to the if - then-else logic below 

I am attempting to determine a BASE DATE by analyze dates I have in columns in my table    

CARGOID   RECEIVEDATE  ORDER ASSIGN DATE    FLEET DEALER BEGIN DATE         BASE DATE 

1234            09/01/22        08/31/22                                                                          09/01/22     

9876            09/01/22        09/04/22                      09/05/22                                     09/05/22     

8888            09/01/22        09/04/22                      09/05/22                                     09/05/22     

5432            09/01/22        09/03/22                                                                         09/03/22      

1122            09/01/22                                                                                                09/01/22     

If ORDER ASSIGN DATE Is Null    then

                BASE DATE = Receive Date

else

                If ORDER ASSIGN DATE > Receive Date then

                       If [FLEET DEALER BEGIN DATE] Is Not Null And [FLEET DEALER BEGIN DATE > ORDER ASSIGN DATE   then

                               BASE DATE =[ FLEET DEALER BEGIN DATE],

                       else

                               BASE DATE = ORDER ASSIGN DATE

                       end if

                      If {FLEET DEALER BEGIN DATE] Is Not Null And [FLEET DEALER BEGIN DATE] > Receive Date , then

                              BASE DATE = [FLEET DEALER BEGIN DATE],

                     else

                              BASE DATE = Receive Date

                    End if

            end if

end if

I tried the below dax code but just can get it to work 

Base Date  =

IF (isblank(MAX(Inventory[ORDERASSIGNMENTDATE])), --then

    MAX(Inventory[RECEIVEDATE]),

-- else

       IF (not(isblank(MAX(Inventory[FLEETDELIVERYBEGINDATE]))) && IF (MAX(Inventory[FLEETDELIVERYBEGINDATE]) >          (MAX(Inventory[ORDERASSIGNMENTDATE])), -- then

            Max(Inventory[FLEETDELIVERYBEGINDATE]),

        --else

            MAX(Inventory[ORDERASSIGNMENTDATE])

        --endif

       )

    || -- not sure if this is correct use of the ||

    IF (not(isblank(MAX(Inventory[FLEETDELIVERYBEGINDATE]))) && If (Max(Inventory[FLEETDELIVERYBEGINDATE]) > (MAX(Inventory[RECEIVEDATE])),  ---then

            Max(Inventory[FLEETDELIVERYBEGINDATE]), ----

        --else

             MAX(Inventory[RECEIVEDATE])

           )

        --endif

  -- endif

Any assistance would be greatly appreciated

Thank You 

[ScottWill]

John, Thank You for the quick 

However what I am trying to do is create a measure based on the LOGIC I posted.  The Logic is from an access program I have and I am trying to recreate the BASE DATE logic in DAX .  So I am trying to see if anyone in the  DAX forum group can assist in converting the logic I have posed to a DAX measure statement 

[johnt75]

If I understand correcly you want to create a new column which has the max value from 3 other columns on the same table for that row. You can add a column like

Base date =
MAXX (
    {
        'Table'[Receive Date],
        'Table'[Order assign date],
        'Table'[Fleet dealer begin date]
    },
    [Value]
)