Finding the Fourth Proportional to 1,645.98, 2,469.24 and 671.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.98 : 2,469.24 = 671.82 : x
2. Step 2: Convert to fraction form
   1,645.98/2,469.24 = 671.82/x
3. Step 3: Cross multiply
   1,645.98x = 2,469.24 × 671.82
4. Step 4: Simplify right side
   1,645.98x = 1,658,884.82
5. Step 5: Solve for x
   x = 1,658,884.82/1,645.98
6. Step 6: Final answer
   x = 1,007.84