Finding the Fourth Proportional to 1,098.94, 1,516.56 and 656.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.94 : 1,516.56 = 656.86 : x
2. Step 2: Convert to fraction form
   1,098.94/1,516.56 = 656.86/x
3. Step 3: Cross multiply
   1,098.94x = 1,516.56 × 656.86
4. Step 4: Simplify right side
   1,098.94x = 996,167.60
5. Step 5: Solve for x
   x = 996,167.60/1,098.94
6. Step 6: Final answer
   x = 906.48