Finding the Fourth Proportional to 2,389.38, 3,297.42 and 1,327.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.38 : 3,297.42 = 1,327.20 : x
2. Step 2: Convert to fraction form
   2,389.38/3,297.42 = 1,327.20/x
3. Step 3: Cross multiply
   2,389.38x = 3,297.42 × 1,327.20
4. Step 4: Simplify right side
   2,389.38x = 4,376,335.82
5. Step 5: Solve for x
   x = 4,376,335.82/2,389.38
6. Step 6: Final answer
   x = 1,831.58