Finding the Fourth Proportional to 2,639.09, 3,641.82 and 1,520.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.09 : 3,641.82 = 1,520.07 : x
2. Step 2: Convert to fraction form
   2,639.09/3,641.82 = 1,520.07/x
3. Step 3: Cross multiply
   2,639.09x = 3,641.82 × 1,520.07
4. Step 4: Simplify right side
   2,639.09x = 5,535,821.33
5. Step 5: Solve for x
   x = 5,535,821.33/2,639.09
6. Step 6: Final answer
   x = 2,097.63