Finding the Fourth Proportional to 3,105.62, 4,286.07 and 1,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.62 : 4,286.07 = 1,779.50 : x
2. Step 2: Convert to fraction form
   3,105.62/4,286.07 = 1,779.50/x
3. Step 3: Cross multiply
   3,105.62x = 4,286.07 × 1,779.50
4. Step 4: Simplify right side
   3,105.62x = 7,627,061.57
5. Step 5: Solve for x
   x = 7,627,061.57/3,105.62
6. Step 6: Final answer
   x = 2,455.89