Finding the Fourth Proportional to 2,469.49, 3,704.67 and 826.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,469.49 : 3,704.67 = 826.20 : x
2. Step 2: Convert to fraction form
   2,469.49/3,704.67 = 826.20/x
3. Step 3: Cross multiply
   2,469.49x = 3,704.67 × 826.20
4. Step 4: Simplify right side
   2,469.49x = 3,060,798.35
5. Step 5: Solve for x
   x = 3,060,798.35/2,469.49
6. Step 6: Final answer
   x = 1,239.45