Finding the Fourth Proportional to 1,123.40, 1,550.02 and 681.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.40 : 1,550.02 = 681.29 : x
2. Step 2: Convert to fraction form
   1,123.40/1,550.02 = 681.29/x
3. Step 3: Cross multiply
   1,123.40x = 1,550.02 × 681.29
4. Step 4: Simplify right side
   1,123.40x = 1,056,013.13
5. Step 5: Solve for x
   x = 1,056,013.13/1,123.40
6. Step 6: Final answer
   x = 940.02