Finding the Fourth Proportional to 2,617.92, 3,612.04 and 1,555.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.92 : 3,612.04 = 1,555.40 : x
2. Step 2: Convert to fraction form
   2,617.92/3,612.04 = 1,555.40/x
3. Step 3: Cross multiply
   2,617.92x = 3,612.04 × 1,555.40
4. Step 4: Simplify right side
   2,617.92x = 5,618,180.91
5. Step 5: Solve for x
   x = 5,618,180.91/2,617.92
6. Step 6: Final answer
   x = 2,146.05