Finding the Fourth Proportional to 2,287.09, 3,429.33 and 726.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.09 : 3,429.33 = 726.79 : x
2. Step 2: Convert to fraction form
   2,287.09/3,429.33 = 726.79/x
3. Step 3: Cross multiply
   2,287.09x = 3,429.33 × 726.79
4. Step 4: Simplify right side
   2,287.09x = 2,492,385.60
5. Step 5: Solve for x
   x = 2,492,385.60/2,287.09
6. Step 6: Final answer
   x = 1,089.77