Finding the Fourth Proportional to 2,023.88, 2,792.91 and 1,139.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.88 : 2,792.91 = 1,139.69 : x
2. Step 2: Convert to fraction form
   2,023.88/2,792.91 = 1,139.69/x
3. Step 3: Cross multiply
   2,023.88x = 2,792.91 × 1,139.69
4. Step 4: Simplify right side
   2,023.88x = 3,183,037.63
5. Step 5: Solve for x
   x = 3,183,037.63/2,023.88
6. Step 6: Final answer
   x = 1,572.74