Finding the Fourth Proportional to 2,082.71, 2,873.98 and 1,138.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.71 : 2,873.98 = 1,138.43 : x
2. Step 2: Convert to fraction form
   2,082.71/2,873.98 = 1,138.43/x
3. Step 3: Cross multiply
   2,082.71x = 2,873.98 × 1,138.43
4. Step 4: Simplify right side
   2,082.71x = 3,271,825.05
5. Step 5: Solve for x
   x = 3,271,825.05/2,082.71
6. Step 6: Final answer
   x = 1,570.95