Finding the Fourth Proportional to 2,104.52, 3,156.57 and 871.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.52 : 3,156.57 = 871.56 : x
2. Step 2: Convert to fraction form
   2,104.52/3,156.57 = 871.56/x
3. Step 3: Cross multiply
   2,104.52x = 3,156.57 × 871.56
4. Step 4: Simplify right side
   2,104.52x = 2,751,140.15
5. Step 5: Solve for x
   x = 2,751,140.15/2,104.52
6. Step 6: Final answer
   x = 1,307.26