Finding the Fourth Proportional to 2,185.59, 3,276.09 and 723.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.59 : 3,276.09 = 723.81 : x
2. Step 2: Convert to fraction form
   2,185.59/3,276.09 = 723.81/x
3. Step 3: Cross multiply
   2,185.59x = 3,276.09 × 723.81
4. Step 4: Simplify right side
   2,185.59x = 2,371,266.70
5. Step 5: Solve for x
   x = 2,371,266.70/2,185.59
6. Step 6: Final answer
   x = 1,084.95