Finding the Fourth Proportional to 2,308.38, 3,185.51 and 1,260.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.38 : 3,185.51 = 1,260.38 : x
2. Step 2: Convert to fraction form
   2,308.38/3,185.51 = 1,260.38/x
3. Step 3: Cross multiply
   2,308.38x = 3,185.51 × 1,260.38
4. Step 4: Simplify right side
   2,308.38x = 4,014,930.86
5. Step 5: Solve for x
   x = 4,014,930.86/2,308.38
6. Step 6: Final answer
   x = 1,739.29