Finding the Fourth Proportional to 2,639.39, 3,642.52 and 1,520.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.39 : 3,642.52 = 1,520.52 : x
2. Step 2: Convert to fraction form
   2,639.39/3,642.52 = 1,520.52/x
3. Step 3: Cross multiply
   2,639.39x = 3,642.52 × 1,520.52
4. Step 4: Simplify right side
   2,639.39x = 5,538,524.51
5. Step 5: Solve for x
   x = 5,538,524.51/2,639.39
6. Step 6: Final answer
   x = 2,098.41