Finding the Fourth Proportional to 2,819.82, 4,229.01 and 870.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.82 : 4,229.01 = 870.96 : x
2. Step 2: Convert to fraction form
   2,819.82/4,229.01 = 870.96/x
3. Step 3: Cross multiply
   2,819.82x = 4,229.01 × 870.96
4. Step 4: Simplify right side
   2,819.82x = 3,683,298.55
5. Step 5: Solve for x
   x = 3,683,298.55/2,819.82
6. Step 6: Final answer
   x = 1,306.22