Finding the Fourth Proportional to 2,501.65, 3,753.42 and 858.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.65 : 3,753.42 = 858.16 : x
2. Step 2: Convert to fraction form
   2,501.65/3,753.42 = 858.16/x
3. Step 3: Cross multiply
   2,501.65x = 3,753.42 × 858.16
4. Step 4: Simplify right side
   2,501.65x = 3,221,034.91
5. Step 5: Solve for x
   x = 3,221,034.91/2,501.65
6. Step 6: Final answer
   x = 1,287.56