Finding the Fourth Proportional to 2,023.28, 2,792.18 and 1,139.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.28 : 2,792.18 = 1,139.11 : x
2. Step 2: Convert to fraction form
   2,023.28/2,792.18 = 1,139.11/x
3. Step 3: Cross multiply
   2,023.28x = 2,792.18 × 1,139.11
4. Step 4: Simplify right side
   2,023.28x = 3,180,605.33
5. Step 5: Solve for x
   x = 3,180,605.33/2,023.28
6. Step 6: Final answer
   x = 1,572.01