Finding the Fourth Proportional to 2,230.85, 3,078.72 and 1,236.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,230.85 : 3,078.72 = 1,236.17 : x
2. Step 2: Convert to fraction form
   2,230.85/3,078.72 = 1,236.17/x
3. Step 3: Cross multiply
   2,230.85x = 3,078.72 × 1,236.17
4. Step 4: Simplify right side
   2,230.85x = 3,805,805.91
5. Step 5: Solve for x
   x = 3,805,805.91/2,230.85
6. Step 6: Final answer
   x = 1,705.99