Finding the Fourth Proportional to 2,638.98, 3,641.67 and 1,443.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.98 : 3,641.67 = 1,443.93 : x
2. Step 2: Convert to fraction form
   2,638.98/3,641.67 = 1,443.93/x
3. Step 3: Cross multiply
   2,638.98x = 3,641.67 × 1,443.93
4. Step 4: Simplify right side
   2,638.98x = 5,258,316.56
5. Step 5: Solve for x
   x = 5,258,316.56/2,638.98
6. Step 6: Final answer
   x = 1,992.56