Finding the Fourth Proportional to 1,022.74, 1,411.41 and 724.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,022.74 : 1,411.41 = 724.52 : x
2. Step 2: Convert to fraction form
   1,022.74/1,411.41 = 724.52/x
3. Step 3: Cross multiply
   1,022.74x = 1,411.41 × 724.52
4. Step 4: Simplify right side
   1,022.74x = 1,022,594.77
5. Step 5: Solve for x
   x = 1,022,594.77/1,022.74
6. Step 6: Final answer
   x = 999.86