Finding the Fourth Proportional to 2,023.42, 2,791.84 and 1,139.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.42 : 2,791.84 = 1,139.22 : x
2. Step 2: Convert to fraction form
   2,023.42/2,791.84 = 1,139.22/x
3. Step 3: Cross multiply
   2,023.42x = 2,791.84 × 1,139.22
4. Step 4: Simplify right side
   2,023.42x = 3,180,530.31
5. Step 5: Solve for x
   x = 3,180,530.31/2,023.42
6. Step 6: Final answer
   x = 1,571.86