Finding the Fourth Proportional to 2,082.89, 2,871.41 and 1,285.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.89 : 2,871.41 = 1,285.68 : x
2. Step 2: Convert to fraction form
   2,082.89/2,871.41 = 1,285.68/x
3. Step 3: Cross multiply
   2,082.89x = 2,871.41 × 1,285.68
4. Step 4: Simplify right side
   2,082.89x = 3,691,714.41
5. Step 5: Solve for x
   x = 3,691,714.41/2,082.89
6. Step 6: Final answer
   x = 1,772.40