Finding the Fourth Proportional to 2,504.79, 3,753.06 and 860.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.79 : 3,753.06 = 860.43 : x
2. Step 2: Convert to fraction form
   2,504.79/3,753.06 = 860.43/x
3. Step 3: Cross multiply
   2,504.79x = 3,753.06 × 860.43
4. Step 4: Simplify right side
   2,504.79x = 3,229,245.42
5. Step 5: Solve for x
   x = 3,229,245.42/2,504.79
6. Step 6: Final answer
   x = 1,289.23