Finding the Fourth Proportional to 2,308.72, 3,185.99 and 1,260.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.72 : 3,185.99 = 1,260.79 : x
2. Step 2: Convert to fraction form
   2,308.72/3,185.99 = 1,260.79/x
3. Step 3: Cross multiply
   2,308.72x = 3,185.99 × 1,260.79
4. Step 4: Simplify right side
   2,308.72x = 4,016,864.33
5. Step 5: Solve for x
   x = 4,016,864.33/2,308.72
6. Step 6: Final answer
   x = 1,739.87