Finding the Fourth Proportional to 2,488.20, 3,432.42 and 1,691.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.20 : 3,432.42 = 1,691.16 : x
2. Step 2: Convert to fraction form
   2,488.20/3,432.42 = 1,691.16/x
3. Step 3: Cross multiply
   2,488.20x = 3,432.42 × 1,691.16
4. Step 4: Simplify right side
   2,488.20x = 5,804,771.41
5. Step 5: Solve for x
   x = 5,804,771.41/2,488.20
6. Step 6: Final answer
   x = 2,332.92