Finding the Fourth Proportional to 2,849.28, 4,272.64 and 1,310.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,849.28 : 4,272.64 = 1,310.72 : x
2. Step 2: Convert to fraction form
   2,849.28/4,272.64 = 1,310.72/x
3. Step 3: Cross multiply
   2,849.28x = 4,272.64 × 1,310.72
4. Step 4: Simplify right side
   2,849.28x = 5,600,234.70
5. Step 5: Solve for x
   x = 5,600,234.70/2,849.28
6. Step 6: Final answer
   x = 1,965.49