Finding the Fourth Proportional to 2,502.10, 3,750.85 and 858.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,502.10 : 3,750.85 = 858.27 : x
2. Step 2: Convert to fraction form
   2,502.10/3,750.85 = 858.27/x
3. Step 3: Cross multiply
   2,502.10x = 3,750.85 × 858.27
4. Step 4: Simplify right side
   2,502.10x = 3,219,242.03
5. Step 5: Solve for x
   x = 3,219,242.03/2,502.10
6. Step 6: Final answer
   x = 1,286.62