Finding the Fourth Proportional to 1,098.89, 1,516.43 and 656.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.89 : 1,516.43 = 656.53 : x
2. Step 2: Convert to fraction form
   1,098.89/1,516.43 = 656.53/x
3. Step 3: Cross multiply
   1,098.89x = 1,516.43 × 656.53
4. Step 4: Simplify right side
   1,098.89x = 995,584.83
5. Step 5: Solve for x
   x = 995,584.83/1,098.89
6. Step 6: Final answer
   x = 905.99