Finding the Fourth Proportional to 2,074.22, 2,862.43 and 1,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.22 : 2,862.43 = 1,142.72 : x
2. Step 2: Convert to fraction form
   2,074.22/2,862.43 = 1,142.72/x
3. Step 3: Cross multiply
   2,074.22x = 2,862.43 × 1,142.72
4. Step 4: Simplify right side
   2,074.22x = 3,270,949.57
5. Step 5: Solve for x
   x = 3,270,949.57/2,074.22
6. Step 6: Final answer
   x = 1,576.95