Finding the Fourth Proportional to 2,613.16, 3,920.12 and 882.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.16 : 3,920.12 = 882.28 : x
2. Step 2: Convert to fraction form
   2,613.16/3,920.12 = 882.28/x
3. Step 3: Cross multiply
   2,613.16x = 3,920.12 × 882.28
4. Step 4: Simplify right side
   2,613.16x = 3,458,643.47
5. Step 5: Solve for x
   x = 3,458,643.47/2,613.16
6. Step 6: Final answer
   x = 1,323.55