Finding the Fourth Proportional to 2,568.72, 3,542.28 and 2,069.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.72 : 3,542.28 = 2,069.76 : x
2. Step 2: Convert to fraction form
   2,568.72/3,542.28 = 2,069.76/x
3. Step 3: Cross multiply
   2,568.72x = 3,542.28 × 2,069.76
4. Step 4: Simplify right side
   2,568.72x = 7,331,669.45
5. Step 5: Solve for x
   x = 7,331,669.45/2,568.72
6. Step 6: Final answer
   x = 2,854.21