Finding the Fourth Proportional to 2,472.18, 3,411.43 and 1,353.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.18 : 3,411.43 = 1,353.09 : x
2. Step 2: Convert to fraction form
   2,472.18/3,411.43 = 1,353.09/x
3. Step 3: Cross multiply
   2,472.18x = 3,411.43 × 1,353.09
4. Step 4: Simplify right side
   2,472.18x = 4,615,971.82
5. Step 5: Solve for x
   x = 4,615,971.82/2,472.18
6. Step 6: Final answer
   x = 1,867.17