Finding the Fourth Proportional to 2,568.76, 3,544.64 and 1,561.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.76 : 3,544.64 = 1,561.02 : x
2. Step 2: Convert to fraction form
   2,568.76/3,544.64 = 1,561.02/x
3. Step 3: Cross multiply
   2,568.76x = 3,544.64 × 1,561.02
4. Step 4: Simplify right side
   2,568.76x = 5,533,253.93
5. Step 5: Solve for x
   x = 5,533,253.93/2,568.76
6. Step 6: Final answer
   x = 2,154.06