Finding the Fourth Proportional to 1,145.52, 1,581.22 and 726.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.52 : 1,581.22 = 726.58 : x
2. Step 2: Convert to fraction form
   1,145.52/1,581.22 = 726.58/x
3. Step 3: Cross multiply
   1,145.52x = 1,581.22 × 726.58
4. Step 4: Simplify right side
   1,145.52x = 1,148,882.83
5. Step 5: Solve for x
   x = 1,148,882.83/1,145.52
6. Step 6: Final answer
   x = 1,002.94