Finding the Fourth Proportional to 2,022.59, 2,791.10 and 1,138.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.59 : 2,791.10 = 1,138.46 : x
2. Step 2: Convert to fraction form
   2,022.59/2,791.10 = 1,138.46/x
3. Step 3: Cross multiply
   2,022.59x = 2,791.10 × 1,138.46
4. Step 4: Simplify right side
   2,022.59x = 3,177,544.60
5. Step 5: Solve for x
   x = 3,177,544.60/2,022.59
6. Step 6: Final answer
   x = 1,571.03