Finding the Fourth Proportional to 2,408.38, 3,613.44 and 946.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,408.38 : 3,613.44 = 946.72 : x
2. Step 2: Convert to fraction form
   2,408.38/3,613.44 = 946.72/x
3. Step 3: Cross multiply
   2,408.38x = 3,613.44 × 946.72
4. Step 4: Simplify right side
   2,408.38x = 3,420,915.92
5. Step 5: Solve for x
   x = 3,420,915.92/2,408.38
6. Step 6: Final answer
   x = 1,420.42