Finding the Fourth Proportional to 2,502.42, 3,749.52 and 858.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,502.42 : 3,749.52 = 858.08 : x
2. Step 2: Convert to fraction form
   2,502.42/3,749.52 = 858.08/x
3. Step 3: Cross multiply
   2,502.42x = 3,749.52 × 858.08
4. Step 4: Simplify right side
   2,502.42x = 3,217,369.37
5. Step 5: Solve for x
   x = 3,217,369.37/2,502.42
6. Step 6: Final answer
   x = 1,285.70