Finding the Fourth Proportional to 1,040.72, 1,436.16 and 574.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.72 : 1,436.16 = 574.94 : x
2. Step 2: Convert to fraction form
   1,040.72/1,436.16 = 574.94/x
3. Step 3: Cross multiply
   1,040.72x = 1,436.16 × 574.94
4. Step 4: Simplify right side
   1,040.72x = 825,705.83
5. Step 5: Solve for x
   x = 825,705.83/1,040.72
6. Step 6: Final answer
   x = 793.40