Finding the Fourth Proportional to 3,105.32, 4,285.59 and 1,779.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.32 : 4,285.59 = 1,779.46 : x
2. Step 2: Convert to fraction form
   3,105.32/4,285.59 = 1,779.46/x
3. Step 3: Cross multiply
   3,105.32x = 4,285.59 × 1,779.46
4. Step 4: Simplify right side
   3,105.32x = 7,626,035.98
5. Step 5: Solve for x
   x = 7,626,035.98/3,105.32
6. Step 6: Final answer
   x = 2,455.80