Finding the Fourth Proportional to 2,521.56, 3,780.18 and 877.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.56 : 3,780.18 = 877.08 : x
2. Step 2: Convert to fraction form
   2,521.56/3,780.18 = 877.08/x
3. Step 3: Cross multiply
   2,521.56x = 3,780.18 × 877.08
4. Step 4: Simplify right side
   2,521.56x = 3,315,520.27
5. Step 5: Solve for x
   x = 3,315,520.27/2,521.56
6. Step 6: Final answer
   x = 1,314.87