Finding the Fourth Proportional to 2,286.82, 3,155.82 and 1,238.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.82 : 3,155.82 = 1,238.88 : x
2. Step 2: Convert to fraction form
   2,286.82/3,155.82 = 1,238.88/x
3. Step 3: Cross multiply
   2,286.82x = 3,155.82 × 1,238.88
4. Step 4: Simplify right side
   2,286.82x = 3,909,682.28
5. Step 5: Solve for x
   x = 3,909,682.28/2,286.82
6. Step 6: Final answer
   x = 1,709.66