Finding the Fourth Proportional to 1,040.58, 1,436.52 and 726.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.58 : 1,436.52 = 726.12 : x
2. Step 2: Convert to fraction form
   1,040.58/1,436.52 = 726.12/x
3. Step 3: Cross multiply
   1,040.58x = 1,436.52 × 726.12
4. Step 4: Simplify right side
   1,040.58x = 1,043,085.90
5. Step 5: Solve for x
   x = 1,043,085.90/1,040.58
6. Step 6: Final answer
   x = 1,002.41