Finding the Fourth Proportional to 2,105.82, 3,158.86 and 873.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.82 : 3,158.86 = 873.33 : x
2. Step 2: Convert to fraction form
   2,105.82/3,158.86 = 873.33/x
3. Step 3: Cross multiply
   2,105.82x = 3,158.86 × 873.33
4. Step 4: Simplify right side
   2,105.82x = 2,758,727.20
5. Step 5: Solve for x
   x = 2,758,727.20/2,105.82
6. Step 6: Final answer
   x = 1,310.05