Finding the Fourth Proportional to 2,818.82, 4,227.51 and 869.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.82 : 4,227.51 = 869.96 : x
2. Step 2: Convert to fraction form
   2,818.82/4,227.51 = 869.96/x
3. Step 3: Cross multiply
   2,818.82x = 4,227.51 × 869.96
4. Step 4: Simplify right side
   2,818.82x = 3,677,764.60
5. Step 5: Solve for x
   x = 3,677,764.60/2,818.82
6. Step 6: Final answer
   x = 1,304.72