Finding the Fourth Proportional to 1,123.92, 1,550.88 and 681.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.92 : 1,550.88 = 681.93 : x
2. Step 2: Convert to fraction form
   1,123.92/1,550.88 = 681.93/x
3. Step 3: Cross multiply
   1,123.92x = 1,550.88 × 681.93
4. Step 4: Simplify right side
   1,123.92x = 1,057,591.60
5. Step 5: Solve for x
   x = 1,057,591.60/1,123.92
6. Step 6: Final answer
   x = 940.98