Finding the Fourth Proportional to 2,504.85, 3,753.15 and 860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.85 : 3,753.15 = 860.50 : x
2. Step 2: Convert to fraction form
   2,504.85/3,753.15 = 860.50/x
3. Step 3: Cross multiply
   2,504.85x = 3,753.15 × 860.50
4. Step 4: Simplify right side
   2,504.85x = 3,229,585.58
5. Step 5: Solve for x
   x = 3,229,585.58/2,504.85
6. Step 6: Final answer
   x = 1,289.33