Finding the Fourth Proportional to 1,123.14, 1,550.28 and 681.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.14 : 1,550.28 = 681.24 : x
2. Step 2: Convert to fraction form
   1,123.14/1,550.28 = 681.24/x
3. Step 3: Cross multiply
   1,123.14x = 1,550.28 × 681.24
4. Step 4: Simplify right side
   1,123.14x = 1,056,112.75
5. Step 5: Solve for x
   x = 1,056,112.75/1,123.14
6. Step 6: Final answer
   x = 940.32