Finding the Fourth Proportional to 2,128.42, 2,934.66 and 1,568.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.42 : 2,934.66 = 1,568.80 : x
2. Step 2: Convert to fraction form
   2,128.42/2,934.66 = 1,568.80/x
3. Step 3: Cross multiply
   2,128.42x = 2,934.66 × 1,568.80
4. Step 4: Simplify right side
   2,128.42x = 4,603,894.61
5. Step 5: Solve for x
   x = 4,603,894.61/2,128.42
6. Step 6: Final answer
   x = 2,163.06