Finding the Fourth Proportional to 2,308.64, 3,185.82 and 1,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.64 : 3,185.82 = 1,260.72 : x
2. Step 2: Convert to fraction form
   2,308.64/3,185.82 = 1,260.72/x
3. Step 3: Cross multiply
   2,308.64x = 3,185.82 × 1,260.72
4. Step 4: Simplify right side
   2,308.64x = 4,016,426.99
5. Step 5: Solve for x
   x = 4,016,426.99/2,308.64
6. Step 6: Final answer
   x = 1,739.74