Finding the Fourth Proportional to 2,105.24, 3,158.56 and 873.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.24 : 3,158.56 = 873.22 : x
2. Step 2: Convert to fraction form
   2,105.24/3,158.56 = 873.22/x
3. Step 3: Cross multiply
   2,105.24x = 3,158.56 × 873.22
4. Step 4: Simplify right side
   2,105.24x = 2,758,117.76
5. Step 5: Solve for x
   x = 2,758,117.76/2,105.24
6. Step 6: Final answer
   x = 1,310.12