Finding the Fourth Proportional to 2,074.74, 2,862.85 and 1,143.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.74 : 2,862.85 = 1,143.30 : x
2. Step 2: Convert to fraction form
   2,074.74/2,862.85 = 1,143.30/x
3. Step 3: Cross multiply
   2,074.74x = 2,862.85 × 1,143.30
4. Step 4: Simplify right side
   2,074.74x = 3,273,096.41
5. Step 5: Solve for x
   x = 3,273,096.41/2,074.74
6. Step 6: Final answer
   x = 1,577.59