Looking up values from a table with missing dates

I have a Table 1 that tracks increases and decreases in inventory, but only has line items for the days where the inventory changes:

And I have Table 2 with dates and items, and I need to indicate what the inventory is on each date for each item, like this:

I need to somehow lookup from the first table the value of Unit Total for the greatest date less than or equal to the given row and where the item is the same.

I can't figure out a simple way to do it. The direction I've taken has been to concatenate item and date on both tables ("Item-Date"), then use Lookup to pull in Unit Total for those dates where it exists:

Incomplete Totals = LOOKUPVALUE('Table 1'[Unit Total],'Table 1'[Item-Date],'Table 2'[Item-Date])

That gives me a column with values where they exist, and blanks for the rest.

Then I try to create a second column to fill in the blanks:

Daily Unit Total = CALCULATE(

    MAX('Table 2'[Incomplete Totals]),

    ALL('Table 2'),

    'Table 2'[Date] <= EARLIER('Table 2'[Date]),

    'Table 2'[Item] = EARLIER('Table 2'[Item])
)

Unfortunately, this formula takes the max Unit Total, rather than finding the Unit Total for the Max Date. So it works for Item B, which only increases, but doesn't decrease Item A when it goes from 10 to 5 on 1/3.

I'd love it if there's a better way to do the lookup so I can do it all in one step. Otherwise, I'd be interested to know how to structure my Calculate formula to get the Unit Total for just the max date less than the date in the current row, for the given item.