Finding the Fourth Proportional to 2,308.32, 3,185.44 and 1,260.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.32 : 3,185.44 = 1,260.31 : x
2. Step 2: Convert to fraction form
   2,308.32/3,185.44 = 1,260.31/x
3. Step 3: Cross multiply
   2,308.32x = 3,185.44 × 1,260.31
4. Step 4: Simplify right side
   2,308.32x = 4,014,641.89
5. Step 5: Solve for x
   x = 4,014,641.89/2,308.32
6. Step 6: Final answer
   x = 1,739.21