Finding the Fourth Proportional to 2,236.84, 3,086.83 and 1,228.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.84 : 3,086.83 = 1,228.57 : x
2. Step 2: Convert to fraction form
   2,236.84/3,086.83 = 1,228.57/x
3. Step 3: Cross multiply
   2,236.84x = 3,086.83 × 1,228.57
4. Step 4: Simplify right side
   2,236.84x = 3,792,375.94
5. Step 5: Solve for x
   x = 3,792,375.94/2,236.84
6. Step 6: Final answer
   x = 1,695.42