Finding the Fourth Proportional to 1,123.42, 1,550.49 and 681.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.42 : 1,550.49 = 681.62 : x
2. Step 2: Convert to fraction form
   1,123.42/1,550.49 = 681.62/x
3. Step 3: Cross multiply
   1,123.42x = 1,550.49 × 681.62
4. Step 4: Simplify right side
   1,123.42x = 1,056,838.52
5. Step 5: Solve for x
   x = 1,056,838.52/1,123.42
6. Step 6: Final answer
   x = 940.73