Finding the Fourth Proportional to 2,726.08, 4,089.92 and 877.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.08 : 4,089.92 = 877.15 : x
2. Step 2: Convert to fraction form
   2,726.08/4,089.92 = 877.15/x
3. Step 3: Cross multiply
   2,726.08x = 4,089.92 × 877.15
4. Step 4: Simplify right side
   2,726.08x = 3,587,488.02
5. Step 5: Solve for x
   x = 3,587,488.02/2,726.08
6. Step 6: Final answer
   x = 1,315.99