Finding the Fourth Proportional to 2,104.62, 3,158.34 and 872.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.62 : 3,158.34 = 872.01 : x
2. Step 2: Convert to fraction form
   2,104.62/3,158.34 = 872.01/x
3. Step 3: Cross multiply
   2,104.62x = 3,158.34 × 872.01
4. Step 4: Simplify right side
   2,104.62x = 2,754,104.06
5. Step 5: Solve for x
   x = 2,754,104.06/2,104.62
6. Step 6: Final answer
   x = 1,308.60