Finding the Fourth Proportional to 2,870.46, 4,306.12 and 1,227

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.46 : 4,306.12 = 1,227 : x
2. Step 2: Convert to fraction form
   2,870.46/4,306.12 = 1,227/x
3. Step 3: Cross multiply
   2,870.46x = 4,306.12 × 1,227
4. Step 4: Simplify right side
   2,870.46x = 5,283,609.24
5. Step 5: Solve for x
   x = 5,283,609.24/2,870.46
6. Step 6: Final answer
   x = 1,840.68