Finding the Fourth Proportional to 2,230.86, 3,078.74 and 1,236.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,230.86 : 3,078.74 = 1,236.18 : x
2. Step 2: Convert to fraction form
   2,230.86/3,078.74 = 1,236.18/x
3. Step 3: Cross multiply
   2,230.86x = 3,078.74 × 1,236.18
4. Step 4: Simplify right side
   2,230.86x = 3,805,870.63
5. Step 5: Solve for x
   x = 3,805,870.63/2,230.86
6. Step 6: Final answer
   x = 1,706.01