Finding the Fourth Proportional to 2,819.67, 4,229.79 and 970.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.67 : 4,229.79 = 970.56 : x
2. Step 2: Convert to fraction form
   2,819.67/4,229.79 = 970.56/x
3. Step 3: Cross multiply
   2,819.67x = 4,229.79 × 970.56
4. Step 4: Simplify right side
   2,819.67x = 4,105,264.98
5. Step 5: Solve for x
   x = 4,105,264.98/2,819.67
6. Step 6: Final answer
   x = 1,455.94