Finding the Fourth Proportional to 1,101.59, 1,520.09 and 659.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.59 : 1,520.09 = 659.48 : x
2. Step 2: Convert to fraction form
   1,101.59/1,520.09 = 659.48/x
3. Step 3: Cross multiply
   1,101.59x = 1,520.09 × 659.48
4. Step 4: Simplify right side
   1,101.59x = 1,002,469.46
5. Step 5: Solve for x
   x = 1,002,469.46/1,101.59
6. Step 6: Final answer
   x = 910.02