Finding the Fourth Proportional to 2,726.59, 4,090.54 and 877.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.59 : 4,090.54 = 877.88 : x
2. Step 2: Convert to fraction form
   2,726.59/4,090.54 = 877.88/x
3. Step 3: Cross multiply
   2,726.59x = 4,090.54 × 877.88
4. Step 4: Simplify right side
   2,726.59x = 3,590,982.80
5. Step 5: Solve for x
   x = 3,590,982.80/2,726.59
6. Step 6: Final answer
   x = 1,317.03