Finding the Fourth Proportional to 1,101.50, 1,520.07 and 659.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.50 : 1,520.07 = 659.47 : x
2. Step 2: Convert to fraction form
   1,101.50/1,520.07 = 659.47/x
3. Step 3: Cross multiply
   1,101.50x = 1,520.07 × 659.47
4. Step 4: Simplify right side
   1,101.50x = 1,002,440.56
5. Step 5: Solve for x
   x = 1,002,440.56/1,101.50
6. Step 6: Final answer
   x = 910.07