Finding the Fourth Proportional to 2,616.78, 3,611.07 and 1,568.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.78 : 3,611.07 = 1,568.10 : x
2. Step 2: Convert to fraction form
   2,616.78/3,611.07 = 1,568.10/x
3. Step 3: Cross multiply
   2,616.78x = 3,611.07 × 1,568.10
4. Step 4: Simplify right side
   2,616.78x = 5,662,518.87
5. Step 5: Solve for x
   x = 5,662,518.87/2,616.78
6. Step 6: Final answer
   x = 2,163.93