Finding the Fourth Proportional to 2,439.30, 3,653.55 and 2,007.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.30 : 3,653.55 = 2,007.30 : x
2. Step 2: Convert to fraction form
   2,439.30/3,653.55 = 2,007.30/x
3. Step 3: Cross multiply
   2,439.30x = 3,653.55 × 2,007.30
4. Step 4: Simplify right side
   2,439.30x = 7,333,770.92
5. Step 5: Solve for x
   x = 7,333,770.92/2,439.30
6. Step 6: Final answer
   x = 3,006.51