Finding the Fourth Proportional to 2,808.72, 4,210.38 and 2,568.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,808.72 : 4,210.38 = 2,568.12 : x
2. Step 2: Convert to fraction form
   2,808.72/4,210.38 = 2,568.12/x
3. Step 3: Cross multiply
   2,808.72x = 4,210.38 × 2,568.12
4. Step 4: Simplify right side
   2,808.72x = 10,812,761.09
5. Step 5: Solve for x
   x = 10,812,761.09/2,808.72
6. Step 6: Final answer
   x = 3,849.71