Finding the Fourth Proportional to 1,040.48, 1,435.92 and 574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.48 : 1,435.92 = 574.72 : x
2. Step 2: Convert to fraction form
   1,040.48/1,435.92 = 574.72/x
3. Step 3: Cross multiply
   1,040.48x = 1,435.92 × 574.72
4. Step 4: Simplify right side
   1,040.48x = 825,251.94
5. Step 5: Solve for x
   x = 825,251.94/1,040.48
6. Step 6: Final answer
   x = 793.15