Finding the Fourth Proportional to 2,150.68, 3,227.82 and 853.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.68 : 3,227.82 = 853.04 : x
2. Step 2: Convert to fraction form
   2,150.68/3,227.82 = 853.04/x
3. Step 3: Cross multiply
   2,150.68x = 3,227.82 × 853.04
4. Step 4: Simplify right side
   2,150.68x = 2,753,459.57
5. Step 5: Solve for x
   x = 2,753,459.57/2,150.68
6. Step 6: Final answer
   x = 1,280.27