Finding the Fourth Proportional to 2,022.55, 2,791.10 and 1,138.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.55 : 2,791.10 = 1,138.37 : x
2. Step 2: Convert to fraction form
   2,022.55/2,791.10 = 1,138.37/x
3. Step 3: Cross multiply
   2,022.55x = 2,791.10 × 1,138.37
4. Step 4: Simplify right side
   2,022.55x = 3,177,293.40
5. Step 5: Solve for x
   x = 3,177,293.40/2,022.55
6. Step 6: Final answer
   x = 1,570.94