Because 1023.68 is 112% of the loan, you can divide by 1.12 to get 914, which is the answer
What are you trying to prove here? I know when step will be the use of the Transitive Property. If a=b, and b=c, then a=c.
Tan x degrees = 31
To find X use arctan.
x = arctan(31)
x = 88.15
x = 88.2 (rounded to the nearest tenth)