Finding the Fourth Proportional to 2,022.82, 2,791.32 and 1,138.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.82 : 2,791.32 = 1,138.49 : x
2. Step 2: Convert to fraction form
   2,022.82/2,791.32 = 1,138.49/x
3. Step 3: Cross multiply
   2,022.82x = 2,791.32 × 1,138.49
4. Step 4: Simplify right side
   2,022.82x = 3,177,889.91
5. Step 5: Solve for x
   x = 3,177,889.91/2,022.82
6. Step 6: Final answer
   x = 1,571.02