Finding the Fourth Proportional to 2,023.32, 2,791.97 and 1,139.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.32 : 2,791.97 = 1,139.05 : x
2. Step 2: Convert to fraction form
   2,023.32/2,791.97 = 1,139.05/x
3. Step 3: Cross multiply
   2,023.32x = 2,791.97 × 1,139.05
4. Step 4: Simplify right side
   2,023.32x = 3,180,193.43
5. Step 5: Solve for x
   x = 3,180,193.43/2,023.32
6. Step 6: Final answer
   x = 1,571.77