Finding the Fourth Proportional to 2,023.58, 2,792.51 and 1,139.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.58 : 2,792.51 = 1,139.38 : x
2. Step 2: Convert to fraction form
   2,023.58/2,792.51 = 1,139.38/x
3. Step 3: Cross multiply
   2,023.58x = 2,792.51 × 1,139.38
4. Step 4: Simplify right side
   2,023.58x = 3,181,710.38
5. Step 5: Solve for x
   x = 3,181,710.38/2,023.58
6. Step 6: Final answer
   x = 1,572.32