Finding the Fourth Proportional to 2,308.65, 3,185.94 and 1,260.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.65 : 3,185.94 = 1,260.73 : x
2. Step 2: Convert to fraction form
   2,308.65/3,185.94 = 1,260.73/x
3. Step 3: Cross multiply
   2,308.65x = 3,185.94 × 1,260.73
4. Step 4: Simplify right side
   2,308.65x = 4,016,610.14
5. Step 5: Solve for x
   x = 4,016,610.14/2,308.65
6. Step 6: Final answer
   x = 1,739.81