Finding the Fourth Proportional to 2,329.72, 3,489.55 and 1,095.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,329.72 : 3,489.55 = 1,095.28 : x
2. Step 2: Convert to fraction form
   2,329.72/3,489.55 = 1,095.28/x
3. Step 3: Cross multiply
   2,329.72x = 3,489.55 × 1,095.28
4. Step 4: Simplify right side
   2,329.72x = 3,822,022.86
5. Step 5: Solve for x
   x = 3,822,022.86/2,329.72
6. Step 6: Final answer
   x = 1,640.55