Finding the Fourth Proportional to 2,870.82, 4,306.68 and 1,227.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.82 : 4,306.68 = 1,227.38 : x
2. Step 2: Convert to fraction form
   2,870.82/4,306.68 = 1,227.38/x
3. Step 3: Cross multiply
   2,870.82x = 4,306.68 × 1,227.38
4. Step 4: Simplify right side
   2,870.82x = 5,285,911.37
5. Step 5: Solve for x
   x = 5,285,911.37/2,870.82
6. Step 6: Final answer
   x = 1,841.25