Finding the Fourth Proportional to 1,101.97, 1,520.91 and 659.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.97 : 1,520.91 = 659.89 : x
2. Step 2: Convert to fraction form
   1,101.97/1,520.91 = 659.89/x
3. Step 3: Cross multiply
   1,101.97x = 1,520.91 × 659.89
4. Step 4: Simplify right side
   1,101.97x = 1,003,633.30
5. Step 5: Solve for x
   x = 1,003,633.30/1,101.97
6. Step 6: Final answer
   x = 910.76