Finding the Fourth Proportional to 1,123.38, 1,551.02 and 681.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.38 : 1,551.02 = 681.53 : x
2. Step 2: Convert to fraction form
   1,123.38/1,551.02 = 681.53/x
3. Step 3: Cross multiply
   1,123.38x = 1,551.02 × 681.53
4. Step 4: Simplify right side
   1,123.38x = 1,057,055.50
5. Step 5: Solve for x
   x = 1,057,055.50/1,123.38
6. Step 6: Final answer
   x = 940.96