Finding the Fourth Proportional to 2,488.92, 3,432.69 and 2,189.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.92 : 3,432.69 = 2,189.52 : x
2. Step 2: Convert to fraction form
   2,488.92/3,432.69 = 2,189.52/x
3. Step 3: Cross multiply
   2,488.92x = 3,432.69 × 2,189.52
4. Step 4: Simplify right side
   2,488.92x = 7,515,943.41
5. Step 5: Solve for x
   x = 7,515,943.41/2,488.92
6. Step 6: Final answer
   x = 3,019.76