Finding the Fourth Proportional to 2,639.33, 3,642.23 and 1,520.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.33 : 3,642.23 = 1,520.27 : x
2. Step 2: Convert to fraction form
   2,639.33/3,642.23 = 1,520.27/x
3. Step 3: Cross multiply
   2,639.33x = 3,642.23 × 1,520.27
4. Step 4: Simplify right side
   2,639.33x = 5,537,158.59
5. Step 5: Solve for x
   x = 5,537,158.59/2,639.33
6. Step 6: Final answer
   x = 2,097.94