Finding the Fourth Proportional to 2,397.25, 3,597.50 and 858.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,397.25 : 3,597.50 = 858.25 : x
2. Step 2: Convert to fraction form
   2,397.25/3,597.50 = 858.25/x
3. Step 3: Cross multiply
   2,397.25x = 3,597.50 × 858.25
4. Step 4: Simplify right side
   2,397.25x = 3,087,554.38
5. Step 5: Solve for x
   x = 3,087,554.38/2,397.25
6. Step 6: Final answer
   x = 1,287.96