Finding the Fourth Proportional to 2,638.58, 3,641.21 and 1,443.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.58 : 3,641.21 = 1,443.54 : x
2. Step 2: Convert to fraction form
   2,638.58/3,641.21 = 1,443.54/x
3. Step 3: Cross multiply
   2,638.58x = 3,641.21 × 1,443.54
4. Step 4: Simplify right side
   2,638.58x = 5,256,232.28
5. Step 5: Solve for x
   x = 5,256,232.28/2,638.58
6. Step 6: Final answer
   x = 1,992.07