Finding the Fourth Proportional to 2,638.41, 3,954.27 and 1,322.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.41 : 3,954.27 = 1,322.67 : x
2. Step 2: Convert to fraction form
   2,638.41/3,954.27 = 1,322.67/x
3. Step 3: Cross multiply
   2,638.41x = 3,954.27 × 1,322.67
4. Step 4: Simplify right side
   2,638.41x = 5,230,194.30
5. Step 5: Solve for x
   x = 5,230,194.30/2,638.41
6. Step 6: Final answer
   x = 1,982.33