Finding the Fourth Proportional to 3,049.30, 4,573.71 and 858.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,049.30 : 4,573.71 = 858.10 : x
2. Step 2: Convert to fraction form
   3,049.30/4,573.71 = 858.10/x
3. Step 3: Cross multiply
   3,049.30x = 4,573.71 × 858.10
4. Step 4: Simplify right side
   3,049.30x = 3,924,700.55
5. Step 5: Solve for x
   x = 3,924,700.55/3,049.30
6. Step 6: Final answer
   x = 1,287.08