Finding the Fourth Proportional to 1,124.52, 1,687.86 and 1,099.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.52 : 1,687.86 = 1,099.68 : x
2. Step 2: Convert to fraction form
   1,124.52/1,687.86 = 1,099.68/x
3. Step 3: Cross multiply
   1,124.52x = 1,687.86 × 1,099.68
4. Step 4: Simplify right side
   1,124.52x = 1,856,105.88
5. Step 5: Solve for x
   x = 1,856,105.88/1,124.52
6. Step 6: Final answer
   x = 1,650.58