Finding the Fourth Proportional to 2,315.38, 3,472.35 and 672.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.38 : 3,472.35 = 672.04 : x
2. Step 2: Convert to fraction form
   2,315.38/3,472.35 = 672.04/x
3. Step 3: Cross multiply
   2,315.38x = 3,472.35 × 672.04
4. Step 4: Simplify right side
   2,315.38x = 2,333,554.73
5. Step 5: Solve for x
   x = 2,333,554.73/2,315.38
6. Step 6: Final answer
   x = 1,007.85