Finding the Fourth Proportional to 2,521.28, 3,782.43 and 877.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.28 : 3,782.43 = 877.95 : x
2. Step 2: Convert to fraction form
   2,521.28/3,782.43 = 877.95/x
3. Step 3: Cross multiply
   2,521.28x = 3,782.43 × 877.95
4. Step 4: Simplify right side
   2,521.28x = 3,320,793.33
5. Step 5: Solve for x
   x = 3,320,793.33/2,521.28
6. Step 6: Final answer
   x = 1,317.11