Finding the Fourth Proportional to 2,308.38, 3,185.63 and 1,260.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.38 : 3,185.63 = 1,260.51 : x
2. Step 2: Convert to fraction form
   2,308.38/3,185.63 = 1,260.51/x
3. Step 3: Cross multiply
   2,308.38x = 3,185.63 × 1,260.51
4. Step 4: Simplify right side
   2,308.38x = 4,015,518.47
5. Step 5: Solve for x
   x = 4,015,518.47/2,308.38
6. Step 6: Final answer
   x = 1,739.54