Running total not giving correct answer

hello Devon-Yeager 

if i am not misunderstood the discussion, the problem is how to calculate running sum from a measure.

next the [Available Hours] is a form of measure from another calculation.

please check if this accomodate your expected result (please ignore the index as it works only as sorting in table visual).

i think the [5. Running Sum] above should be matched to your correct hours.

create a new measure for calculating Running Sum

5. Running Sum = 
SUMX(
    FILTER(
        ALL('Table'),
        'Table'[Date]<=MAX('Table'[Date])
    ),
    [Available Hours]
)