Finding the Fourth Proportional to 2,105.26, 3,158.06 and 718.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.26 : 3,158.06 = 718.04 : x
2. Step 2: Convert to fraction form
   2,105.26/3,158.06 = 718.04/x
3. Step 3: Cross multiply
   2,105.26x = 3,158.06 × 718.04
4. Step 4: Simplify right side
   2,105.26x = 2,267,613.40
5. Step 5: Solve for x
   x = 2,267,613.40/2,105.26
6. Step 6: Final answer
   x = 1,077.12