Finding the Fourth Proportional to 2,022.77, 2,791.46 and 1,138.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.77 : 2,791.46 = 1,138.62 : x
2. Step 2: Convert to fraction form
   2,022.77/2,791.46 = 1,138.62/x
3. Step 3: Cross multiply
   2,022.77x = 2,791.46 × 1,138.62
4. Step 4: Simplify right side
   2,022.77x = 3,178,425.50
5. Step 5: Solve for x
   x = 3,178,425.50/2,022.77
6. Step 6: Final answer
   x = 1,571.32