Finding the Fourth Proportional to 2,104.56, 3,155.46 and 871.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.56 : 3,155.46 = 871.62 : x
2. Step 2: Convert to fraction form
   2,104.56/3,155.46 = 871.62/x
3. Step 3: Cross multiply
   2,104.56x = 3,155.46 × 871.62
4. Step 4: Simplify right side
   2,104.56x = 2,750,362.05
5. Step 5: Solve for x
   x = 2,750,362.05/2,104.56
6. Step 6: Final answer
   x = 1,306.86