Finding the Fourth Proportional to 2,638.03, 3,959.30 and 1,469.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.03 : 3,959.30 = 1,469.20 : x
2. Step 2: Convert to fraction form
   2,638.03/3,959.30 = 1,469.20/x
3. Step 3: Cross multiply
   2,638.03x = 3,959.30 × 1,469.20
4. Step 4: Simplify right side
   2,638.03x = 5,817,003.56
5. Step 5: Solve for x
   x = 5,817,003.56/2,638.03
6. Step 6: Final answer
   x = 2,205.06