Finding the Fourth Proportional to 2,456.12, 3,390 and 1,672.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.12 : 3,390 = 1,672.04 : x
2. Step 2: Convert to fraction form
   2,456.12/3,390 = 1,672.04/x
3. Step 3: Cross multiply
   2,456.12x = 3,390 × 1,672.04
4. Step 4: Simplify right side
   2,456.12x = 5,668,215.60
5. Step 5: Solve for x
   x = 5,668,215.60/2,456.12
6. Step 6: Final answer
   x = 2,307.79