Finding the Fourth Proportional to 2,082.56, 3,122.21 and 1,042.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.56 : 3,122.21 = 1,042.05 : x
2. Step 2: Convert to fraction form
   2,082.56/3,122.21 = 1,042.05/x
3. Step 3: Cross multiply
   2,082.56x = 3,122.21 × 1,042.05
4. Step 4: Simplify right side
   2,082.56x = 3,253,498.93
5. Step 5: Solve for x
   x = 3,253,498.93/2,082.56
6. Step 6: Final answer
   x = 1,562.26