Finding the Fourth Proportional to 2,023.77, 2,792.74 and 1,139.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.77 : 2,792.74 = 1,139.46 : x
2. Step 2: Convert to fraction form
   2,023.77/2,792.74 = 1,139.46/x
3. Step 3: Cross multiply
   2,023.77x = 2,792.74 × 1,139.46
4. Step 4: Simplify right side
   2,023.77x = 3,182,215.52
5. Step 5: Solve for x
   x = 3,182,215.52/2,023.77
6. Step 6: Final answer
   x = 1,572.42