Finding the Fourth Proportional to 2,023.47, 2,792.38 and 1,139.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.47 : 2,792.38 = 1,139.55 : x
2. Step 2: Convert to fraction form
   2,023.47/2,792.38 = 1,139.55/x
3. Step 3: Cross multiply
   2,023.47x = 2,792.38 × 1,139.55
4. Step 4: Simplify right side
   2,023.47x = 3,182,050.93
5. Step 5: Solve for x
   x = 3,182,050.93/2,023.47
6. Step 6: Final answer
   x = 1,572.58