Calculation from within a table

Hi guys,

Quick one - but above is a sample table. "Online" being the primary category/field then we've got two products sat within it.

Due to the way we bid, automatically assigning spend between the two products isn't possible. However, I wondered if there was a way of creating a calculated measure that could do that for me. I.e - if we wanted to assign spend proportionally across the two products depending on the number of leads generated for each product.

Is it possible to create a measure that would multiply the leads from each product (e.g. 8 and 921) by the total CPL (in this case £33.54). The table doesn't necessarily need to do it cleanly - I'd just like a new column that said:

Adjusted Spend
£31,158.24 (e.g. the total for online)
£268.32 (e.g. the blue row: 8x33.54)
£30,890.34 (e.g. the red row: 921x33.54)
£31,158.24 (same as the top, basically the total).

In my head this should be impossible but I wanted to rule it out first.... anyone come up with a way of doing it?