Finding the Fourth Proportional to 3,456.83, 5,185.92 and 992.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,456.83 : 5,185.92 = 992.35 : x
2. Step 2: Convert to fraction form
   3,456.83/5,185.92 = 992.35/x
3. Step 3: Cross multiply
   3,456.83x = 5,185.92 × 992.35
4. Step 4: Simplify right side
   3,456.83x = 5,146,257.92
5. Step 5: Solve for x
   x = 5,146,257.92/3,456.83
6. Step 6: Final answer
   x = 1,488.72