Finding the Fourth Proportional to 1,653.83, 2,480.73 and 679.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,653.83 : 2,480.73 = 679.25 : x
2. Step 2: Convert to fraction form
   1,653.83/2,480.73 = 679.25/x
3. Step 3: Cross multiply
   1,653.83x = 2,480.73 × 679.25
4. Step 4: Simplify right side
   1,653.83x = 1,685,023.45
5. Step 5: Solve for x
   x = 1,685,023.45/1,653.83
6. Step 6: Final answer
   x = 1,018.86