Finding the Fourth Proportional to 2,443.30, 3,371.64 and 1,381.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.30 : 3,371.64 = 1,381.09 : x
2. Step 2: Convert to fraction form
   2,443.30/3,371.64 = 1,381.09/x
3. Step 3: Cross multiply
   2,443.30x = 3,371.64 × 1,381.09
4. Step 4: Simplify right side
   2,443.30x = 4,656,538.29
5. Step 5: Solve for x
   x = 4,656,538.29/2,443.30
6. Step 6: Final answer
   x = 1,905.84