Finding the Fourth Proportional to 1,123.05, 1,550.51 and 725.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.05 : 1,550.51 = 725.06 : x
2. Step 2: Convert to fraction form
   1,123.05/1,550.51 = 725.06/x
3. Step 3: Cross multiply
   1,123.05x = 1,550.51 × 725.06
4. Step 4: Simplify right side
   1,123.05x = 1,124,212.78
5. Step 5: Solve for x
   x = 1,124,212.78/1,123.05
6. Step 6: Final answer
   x = 1,001.04