Finding the Fourth Proportional to 2,472.15, 3,411.45 and 1,353

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.15 : 3,411.45 = 1,353 : x
2. Step 2: Convert to fraction form
   2,472.15/3,411.45 = 1,353/x
3. Step 3: Cross multiply
   2,472.15x = 3,411.45 × 1,353
4. Step 4: Simplify right side
   2,472.15x = 4,615,691.85
5. Step 5: Solve for x
   x = 4,615,691.85/2,472.15
6. Step 6: Final answer
   x = 1,867.08