Finding the Fourth Proportional to 2,023.57, 2,792.50 and 1,139.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.57 : 2,792.50 = 1,139.46 : x
2. Step 2: Convert to fraction form
   2,023.57/2,792.50 = 1,139.46/x
3. Step 3: Cross multiply
   2,023.57x = 2,792.50 × 1,139.46
4. Step 4: Simplify right side
   2,023.57x = 3,181,942.05
5. Step 5: Solve for x
   x = 3,181,942.05/2,023.57
6. Step 6: Final answer
   x = 1,572.44