Paid Modification Needed - Calculating Base Price + All Options On Sequential Order


I have some products on my new website.

They have multiple options that all increase the price.

I need the system to be able to calculate the price + all options in sequential order.

For example.

Base Price £400 + Size (Fixed price modifier £100) + Heavy Duty Framing (25% increase) + Loglap (25% Increase)

Total should be 781.25

Currently CS Cart can only modify the base price.

Please inbox with a quote ASAP. I do not believe this would be that difficult to achieve.