Finding the Fourth Proportional to 1,016.85, 1,403.24 and 574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.85 : 1,403.24 = 574.72 : x
2. Step 2: Convert to fraction form
   1,016.85/1,403.24 = 574.72/x
3. Step 3: Cross multiply
   1,016.85x = 1,403.24 × 574.72
4. Step 4: Simplify right side
   1,016.85x = 806,470.09
5. Step 5: Solve for x
   x = 806,470.09/1,016.85
6. Step 6: Final answer
   x = 793.11