Finding the Fourth Proportional to 1,165.43, 1,608.27 and 868

Step by Step Solution

1. Step 1: Write the proportion equation
   1,165.43 : 1,608.27 = 868 : x
2. Step 2: Convert to fraction form
   1,165.43/1,608.27 = 868/x
3. Step 3: Cross multiply
   1,165.43x = 1,608.27 × 868
4. Step 4: Simplify right side
   1,165.43x = 1,395,978.36
5. Step 5: Solve for x
   x = 1,395,978.36/1,165.43
6. Step 6: Final answer
   x = 1,197.83