Finding the Fourth Proportional to 2,517.76, 3,777.24 and 874.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.76 : 3,777.24 = 874.27 : x
2. Step 2: Convert to fraction form
   2,517.76/3,777.24 = 874.27/x
3. Step 3: Cross multiply
   2,517.76x = 3,777.24 × 874.27
4. Step 4: Simplify right side
   2,517.76x = 3,302,327.61
5. Step 5: Solve for x
   x = 3,302,327.61/2,517.76
6. Step 6: Final answer
   x = 1,311.61