Finding the Fourth Proportional to 2,308.08, 3,185.28 and 1,260.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.08 : 3,185.28 = 1,260.24 : x
2. Step 2: Convert to fraction form
   2,308.08/3,185.28 = 1,260.24/x
3. Step 3: Cross multiply
   2,308.08x = 3,185.28 × 1,260.24
4. Step 4: Simplify right side
   2,308.08x = 4,014,217.27
5. Step 5: Solve for x
   x = 4,014,217.27/2,308.08
6. Step 6: Final answer
   x = 1,739.20