Finding the Fourth Proportional to 1,040.38, 1,435.72 and 574.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.38 : 1,435.72 = 574.63 : x
2. Step 2: Convert to fraction form
   1,040.38/1,435.72 = 574.63/x
3. Step 3: Cross multiply
   1,040.38x = 1,435.72 × 574.63
4. Step 4: Simplify right side
   1,040.38x = 825,007.78
5. Step 5: Solve for x
   x = 825,007.78/1,040.38
6. Step 6: Final answer
   x = 792.99