Finding the Fourth Proportional to 1,647.35, 2,469.59 and 672.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.35 : 2,469.59 = 672.83 : x
2. Step 2: Convert to fraction form
   1,647.35/2,469.59 = 672.83/x
3. Step 3: Cross multiply
   1,647.35x = 2,469.59 × 672.83
4. Step 4: Simplify right side
   1,647.35x = 1,661,614.24
5. Step 5: Solve for x
   x = 1,661,614.24/1,647.35
6. Step 6: Final answer
   x = 1,008.66