Finding the Fourth Proportional to 4,170.10, 6,258.23 and 1,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   4,170.10 : 6,258.23 = 1,978.82 : x
2. Step 2: Convert to fraction form
   4,170.10/6,258.23 = 1,978.82/x
3. Step 3: Cross multiply
   4,170.10x = 6,258.23 × 1,978.82
4. Step 4: Simplify right side
   4,170.10x = 12,383,910.69
5. Step 5: Solve for x
   x = 12,383,910.69/4,170.10
6. Step 6: Final answer
   x = 2,969.69