Finding the Fourth Proportional to 1,168.69, 1,615.12 and 958.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.69 : 1,615.12 = 958.55 : x
2. Step 2: Convert to fraction form
   1,168.69/1,615.12 = 958.55/x
3. Step 3: Cross multiply
   1,168.69x = 1,615.12 × 958.55
4. Step 4: Simplify right side
   1,168.69x = 1,548,173.28
5. Step 5: Solve for x
   x = 1,548,173.28/1,168.69
6. Step 6: Final answer
   x = 1,324.71