Finding the Fourth Proportional to 1,123.92, 1,549.98 and 730.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.92 : 1,549.98 = 730.50 : x
2. Step 2: Convert to fraction form
   1,123.92/1,549.98 = 730.50/x
3. Step 3: Cross multiply
   1,123.92x = 1,549.98 × 730.50
4. Step 4: Simplify right side
   1,123.92x = 1,132,260.39
5. Step 5: Solve for x
   x = 1,132,260.39/1,123.92
6. Step 6: Final answer
   x = 1,007.42