Finding the Fourth Proportional to 2,022.96, 2,791.78 and 1,138.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.96 : 2,791.78 = 1,138.86 : x
2. Step 2: Convert to fraction form
   2,022.96/2,791.78 = 1,138.86/x
3. Step 3: Cross multiply
   2,022.96x = 2,791.78 × 1,138.86
4. Step 4: Simplify right side
   2,022.96x = 3,179,432.61
5. Step 5: Solve for x
   x = 3,179,432.61/2,022.96
6. Step 6: Final answer
   x = 1,571.68