Finding the Fourth Proportional to 2,236.21, 3,086.07 and 1,227.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.21 : 3,086.07 = 1,227.96 : x
2. Step 2: Convert to fraction form
   2,236.21/3,086.07 = 1,227.96/x
3. Step 3: Cross multiply
   2,236.21x = 3,086.07 × 1,227.96
4. Step 4: Simplify right side
   2,236.21x = 3,789,570.52
5. Step 5: Solve for x
   x = 3,789,570.52/2,236.21
6. Step 6: Final answer
   x = 1,694.64