Finding the Fourth Proportional to 3,105.76, 4,286.06 and 1,779.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.76 : 4,286.06 = 1,779.72 : x
2. Step 2: Convert to fraction form
   3,105.76/4,286.06 = 1,779.72/x
3. Step 3: Cross multiply
   3,105.76x = 4,286.06 × 1,779.72
4. Step 4: Simplify right side
   3,105.76x = 7,627,956.37
5. Step 5: Solve for x
   x = 7,627,956.37/3,105.76
6. Step 6: Final answer
   x = 2,456.07