Finding the Fourth Proportional to 2,023.74, 2,792.61 and 1,139.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.74 : 2,792.61 = 1,139.63 : x
2. Step 2: Convert to fraction form
   2,023.74/2,792.61 = 1,139.63/x
3. Step 3: Cross multiply
   2,023.74x = 2,792.61 × 1,139.63
4. Step 4: Simplify right side
   2,023.74x = 3,182,528.17
5. Step 5: Solve for x
   x = 3,182,528.17/2,023.74
6. Step 6: Final answer
   x = 1,572.60