Finding the Fourth Proportional to 2,639.10, 3,641.46 and 1,520.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.10 : 3,641.46 = 1,520.04 : x
2. Step 2: Convert to fraction form
   2,639.10/3,641.46 = 1,520.04/x
3. Step 3: Cross multiply
   2,639.10x = 3,641.46 × 1,520.04
4. Step 4: Simplify right side
   2,639.10x = 5,535,164.86
5. Step 5: Solve for x
   x = 5,535,164.86/2,639.10
6. Step 6: Final answer
   x = 2,097.37