Finding the Fourth Proportional to 2,870.51, 4,306.21 and 1,227.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.51 : 4,306.21 = 1,227.06 : x
2. Step 2: Convert to fraction form
   2,870.51/4,306.21 = 1,227.06/x
3. Step 3: Cross multiply
   2,870.51x = 4,306.21 × 1,227.06
4. Step 4: Simplify right side
   2,870.51x = 5,283,991.88
5. Step 5: Solve for x
   x = 5,283,991.88/2,870.51
6. Step 6: Final answer
   x = 1,840.79