Finding the Fourth Proportional to 1,101.96, 1,520.67 and 659.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.96 : 1,520.67 = 659.91 : x
2. Step 2: Convert to fraction form
   1,101.96/1,520.67 = 659.91/x
3. Step 3: Cross multiply
   1,101.96x = 1,520.67 × 659.91
4. Step 4: Simplify right side
   1,101.96x = 1,003,505.34
5. Step 5: Solve for x
   x = 1,003,505.34/1,101.96
6. Step 6: Final answer
   x = 910.65