Finding the Fourth Proportional to 2,638.93, 3,641.75 and 1,443.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.93 : 3,641.75 = 1,443.96 : x
2. Step 2: Convert to fraction form
   2,638.93/3,641.75 = 1,443.96/x
3. Step 3: Cross multiply
   2,638.93x = 3,641.75 × 1,443.96
4. Step 4: Simplify right side
   2,638.93x = 5,258,541.33
5. Step 5: Solve for x
   x = 5,258,541.33/2,638.93
6. Step 6: Final answer
   x = 1,992.68