Finding the Fourth Proportional to 2,024.16, 2,793.12 and 1,139.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,024.16 : 2,793.12 = 1,139.78 : x
2. Step 2: Convert to fraction form
   2,024.16/2,793.12 = 1,139.78/x
3. Step 3: Cross multiply
   2,024.16x = 2,793.12 × 1,139.78
4. Step 4: Simplify right side
   2,024.16x = 3,183,542.31
5. Step 5: Solve for x
   x = 3,183,542.31/2,024.16
6. Step 6: Final answer
   x = 1,572.77