Finding the Fourth Proportional to 2,819.40, 4,226.52 and 1,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.40 : 4,226.52 = 1,086.72 : x
2. Step 2: Convert to fraction form
   2,819.40/4,226.52 = 1,086.72/x
3. Step 3: Cross multiply
   2,819.40x = 4,226.52 × 1,086.72
4. Step 4: Simplify right side
   2,819.40x = 4,593,043.81
5. Step 5: Solve for x
   x = 4,593,043.81/2,819.40
6. Step 6: Final answer
   x = 1,629.09