Finding the Fourth Proportional to 2,615.85, 3,920.31 and 1,446.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.85 : 3,920.31 = 1,446.12 : x
2. Step 2: Convert to fraction form
   2,615.85/3,920.31 = 1,446.12/x
3. Step 3: Cross multiply
   2,615.85x = 3,920.31 × 1,446.12
4. Step 4: Simplify right side
   2,615.85x = 5,669,238.70
5. Step 5: Solve for x
   x = 5,669,238.70/2,615.85
6. Step 6: Final answer
   x = 2,167.26