Finding the Fourth Proportional to 1,123.71, 1,550.72 and 751.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.71 : 1,550.72 = 751.23 : x
2. Step 2: Convert to fraction form
   1,123.71/1,550.72 = 751.23/x
3. Step 3: Cross multiply
   1,123.71x = 1,550.72 × 751.23
4. Step 4: Simplify right side
   1,123.71x = 1,164,943.63
5. Step 5: Solve for x
   x = 1,164,943.63/1,123.71
6. Step 6: Final answer
   x = 1,036.69