Hello, thank you for taking the time to post your question!
The underlying formula that you want to use to solve here is
Base = Portion / Rate
So plugging in the values that were given to us here gives
Base = 454 / 0.169 = 2686.3905
Rounding to the nearest hundredth makes that value 2686.39
I hope that helps get you moving in the right direction! Feel free to reach out if you have any additional questions beyond that :)
