Finding the Fourth Proportional to 2,726.52, 4,090.53 and 878.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.52 : 4,090.53 = 878.16 : x
2. Step 2: Convert to fraction form
   2,726.52/4,090.53 = 878.16/x
3. Step 3: Cross multiply
   2,726.52x = 4,090.53 × 878.16
4. Step 4: Simplify right side
   2,726.52x = 3,592,139.82
5. Step 5: Solve for x
   x = 3,592,139.82/2,726.52
6. Step 6: Final answer
   x = 1,317.48