get last value from Date

HI, Anonymous

You could try this formula to add a column as below:

Value 2 = 
VAR CurrentCar = 'Table'[Car]
VAR CurrentDate = 'Table'[Month]
VAR CurrentRegion = 'Table'[region]
VAR LastDateWithValue =
    IF (
        ISBLANK ( 'Table'[Value] ) = FALSE (),
        'Table'[month],
        CALCULATE (
            MIN ( 'Table'[month] ),
            FILTER (
                'Table',
                'Table'[car] = EARLIER ( 'Table'[car] )
                    && 'Table'[region] = EARLIER ( 'Table'[region] )
                    &&'Table'[month]>=EARLIER('Table'[month])
                    && ISBLANK ( 'Table'[Value] ) = FALSE ()
            )
        )
    )
RETURN
    VAR A =
        CALCULATE (
            LASTNONBLANK(  'Table'[Value], 'Table'[Value] ),
            FILTER (
                'Table',
                'Table'[Car] = CurrentCar
                    &&  'Table'[Month]  = LastDateWithValue
                    && 'Table'[region] = CurrentRegion
            )
        )
    RETURN
        IF ( ISBLANK ( 'Table'[Value] ), A, 'Table'[Value] )

Result:

Deeper testing

Best Regards,

Lin