Finding the Fourth Proportional to 2,517.77, 3,776.96 and 873.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.77 : 3,776.96 = 873.88 : x
2. Step 2: Convert to fraction form
   2,517.77/3,776.96 = 873.88/x
3. Step 3: Cross multiply
   2,517.77x = 3,776.96 × 873.88
4. Step 4: Simplify right side
   2,517.77x = 3,300,602.55
5. Step 5: Solve for x
   x = 3,300,602.55/2,517.77
6. Step 6: Final answer
   x = 1,310.92