Finding the Fourth Proportional to 2,708.72, 4,062.90 and 1,065.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,708.72 : 4,062.90 = 1,065.55 : x
2. Step 2: Convert to fraction form
   2,708.72/4,062.90 = 1,065.55/x
3. Step 3: Cross multiply
   2,708.72x = 4,062.90 × 1,065.55
4. Step 4: Simplify right side
   2,708.72x = 4,329,223.10
5. Step 5: Solve for x
   x = 4,329,223.10/2,708.72
6. Step 6: Final answer
   x = 1,598.25