Finding the Fourth Proportional to 1,766.42, 2,649.51 and 726.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.42 : 2,649.51 = 726.15 : x
2. Step 2: Convert to fraction form
   1,766.42/2,649.51 = 726.15/x
3. Step 3: Cross multiply
   1,766.42x = 2,649.51 × 726.15
4. Step 4: Simplify right side
   1,766.42x = 1,923,941.69
5. Step 5: Solve for x
   x = 1,923,941.69/1,766.42
6. Step 6: Final answer
   x = 1,089.18