Finding the Fourth Proportional to 2,489.69, 3,734.06 and 2,005.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489.69 : 3,734.06 = 2,005.55 : x
2. Step 2: Convert to fraction form
   2,489.69/3,734.06 = 2,005.55/x
3. Step 3: Cross multiply
   2,489.69x = 3,734.06 × 2,005.55
4. Step 4: Simplify right side
   2,489.69x = 7,488,834.01
5. Step 5: Solve for x
   x = 7,488,834.01/2,489.69
6. Step 6: Final answer
   x = 3,007.94