Finding the Fourth Proportional to 2,638.08, 3,954.72 and 1,098.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.08 : 3,954.72 = 1,098.24 : x
2. Step 2: Convert to fraction form
   2,638.08/3,954.72 = 1,098.24/x
3. Step 3: Cross multiply
   2,638.08x = 3,954.72 × 1,098.24
4. Step 4: Simplify right side
   2,638.08x = 4,343,231.69
5. Step 5: Solve for x
   x = 4,343,231.69/2,638.08
6. Step 6: Final answer
   x = 1,646.36