Finding the Fourth Proportional to 1,098.52, 1,516.26 and 656.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.52 : 1,516.26 = 656.72 : x
2. Step 2: Convert to fraction form
   1,098.52/1,516.26 = 656.72/x
3. Step 3: Cross multiply
   1,098.52x = 1,516.26 × 656.72
4. Step 4: Simplify right side
   1,098.52x = 995,758.27
5. Step 5: Solve for x
   x = 995,758.27/1,098.52
6. Step 6: Final answer
   x = 906.45