Finding the Fourth Proportional to 2,613.24, 3,920.22 and 882.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.24 : 3,920.22 = 882.12 : x
2. Step 2: Convert to fraction form
   2,613.24/3,920.22 = 882.12/x
3. Step 3: Cross multiply
   2,613.24x = 3,920.22 × 882.12
4. Step 4: Simplify right side
   2,613.24x = 3,458,104.47
5. Step 5: Solve for x
   x = 3,458,104.47/2,613.24
6. Step 6: Final answer
   x = 1,323.30