Finding the Fourth Proportional to 5,170.83, 7,757.54 and 1,661.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,170.83 : 7,757.54 = 1,661.15 : x
2. Step 2: Convert to fraction form
   5,170.83/7,757.54 = 1,661.15/x
3. Step 3: Cross multiply
   5,170.83x = 7,757.54 × 1,661.15
4. Step 4: Simplify right side
   5,170.83x = 12,886,454.89
5. Step 5: Solve for x
   x = 12,886,454.89/5,170.83
6. Step 6: Final answer
   x = 2,492.15