Finding the Fourth Proportional to 2,230.56, 3,078.18 and 1,299

Step by Step Solution

1. Step 1: Write the proportion equation
   2,230.56 : 3,078.18 = 1,299 : x
2. Step 2: Convert to fraction form
   2,230.56/3,078.18 = 1,299/x
3. Step 3: Cross multiply
   2,230.56x = 3,078.18 × 1,299
4. Step 4: Simplify right side
   2,230.56x = 3,998,555.82
5. Step 5: Solve for x
   x = 3,998,555.82/2,230.56
6. Step 6: Final answer
   x = 1,792.62