Finding the Fourth Proportional to 2,443.91, 3,372.89 and 1,381.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.91 : 3,372.89 = 1,381.72 : x
2. Step 2: Convert to fraction form
   2,443.91/3,372.89 = 1,381.72/x
3. Step 3: Cross multiply
   2,443.91x = 3,372.89 × 1,381.72
4. Step 4: Simplify right side
   2,443.91x = 4,660,389.57
5. Step 5: Solve for x
   x = 4,660,389.57/2,443.91
6. Step 6: Final answer
   x = 1,906.94