Finding the Fourth Proportional to 2,308.26, 3,185.28 and 1,260.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.26 : 3,185.28 = 1,260.12 : x
2. Step 2: Convert to fraction form
   2,308.26/3,185.28 = 1,260.12/x
3. Step 3: Cross multiply
   2,308.26x = 3,185.28 × 1,260.12
4. Step 4: Simplify right side
   2,308.26x = 4,013,835.03
5. Step 5: Solve for x
   x = 4,013,835.03/2,308.26
6. Step 6: Final answer
   x = 1,738.90