Finding the Fourth Proportional to 2,185.28, 3,276.86 and 723.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.28 : 3,276.86 = 723.94 : x
2. Step 2: Convert to fraction form
   2,185.28/3,276.86 = 723.94/x
3. Step 3: Cross multiply
   2,185.28x = 3,276.86 × 723.94
4. Step 4: Simplify right side
   2,185.28x = 2,372,238.22
5. Step 5: Solve for x
   x = 2,372,238.22/2,185.28
6. Step 6: Final answer
   x = 1,085.55