Finding the Fourth Proportional to 1,597.86, 2,399.54 and 868.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,597.86 : 2,399.54 = 868.86 : x
2. Step 2: Convert to fraction form
   1,597.86/2,399.54 = 868.86/x
3. Step 3: Cross multiply
   1,597.86x = 2,399.54 × 868.86
4. Step 4: Simplify right side
   1,597.86x = 2,084,864.32
5. Step 5: Solve for x
   x = 2,084,864.32/1,597.86
6. Step 6: Final answer
   x = 1,304.79