Finding the Fourth Proportional to 2,381.43, 3,584.55 and 2,155.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.43 : 3,584.55 = 2,155.04 : x
2. Step 2: Convert to fraction form
   2,381.43/3,584.55 = 2,155.04/x
3. Step 3: Cross multiply
   2,381.43x = 3,584.55 × 2,155.04
4. Step 4: Simplify right side
   2,381.43x = 7,724,830.71
5. Step 5: Solve for x
   x = 7,724,830.71/2,381.43
6. Step 6: Final answer
   x = 3,243.78