Finding the Fourth Proportional to 2,185.09, 3,275.34 and 723.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.09 : 3,275.34 = 723.31 : x
2. Step 2: Convert to fraction form
   2,185.09/3,275.34 = 723.31/x
3. Step 3: Cross multiply
   2,185.09x = 3,275.34 × 723.31
4. Step 4: Simplify right side
   2,185.09x = 2,369,086.18
5. Step 5: Solve for x
   x = 2,369,086.18/2,185.09
6. Step 6: Final answer
   x = 1,084.21