Finding the Fourth Proportional to 2,819.34, 4,228.20 and 969.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.34 : 4,228.20 = 969.98 : x
2. Step 2: Convert to fraction form
   2,819.34/4,228.20 = 969.98/x
3. Step 3: Cross multiply
   2,819.34x = 4,228.20 × 969.98
4. Step 4: Simplify right side
   2,819.34x = 4,101,248.30
5. Step 5: Solve for x
   x = 4,101,248.30/2,819.34
6. Step 6: Final answer
   x = 1,454.68