Finding the Fourth Proportional to 1,101.71, 1,520.10 and 659.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.71 : 1,520.10 = 659.54 : x
2. Step 2: Convert to fraction form
   1,101.71/1,520.10 = 659.54/x
3. Step 3: Cross multiply
   1,101.71x = 1,520.10 × 659.54
4. Step 4: Simplify right side
   1,101.71x = 1,002,570.55
5. Step 5: Solve for x
   x = 1,002,570.55/1,101.71
6. Step 6: Final answer
   x = 910.01