Finding the Fourth Proportional to 2,521.46, 3,782.50 and 877.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.46 : 3,782.50 = 877.77 : x
2. Step 2: Convert to fraction form
   2,521.46/3,782.50 = 877.77/x
3. Step 3: Cross multiply
   2,521.46x = 3,782.50 × 877.77
4. Step 4: Simplify right side
   2,521.46x = 3,320,162.83
5. Step 5: Solve for x
   x = 3,320,162.83/2,521.46
6. Step 6: Final answer
   x = 1,316.76