Finding the Fourth Proportional to 2,819.34, 4,227.39 and 1,085.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.34 : 4,227.39 = 1,085.94 : x
2. Step 2: Convert to fraction form
   2,819.34/4,227.39 = 1,085.94/x
3. Step 3: Cross multiply
   2,819.34x = 4,227.39 × 1,085.94
4. Step 4: Simplify right side
   2,819.34x = 4,590,691.90
5. Step 5: Solve for x
   x = 4,590,691.90/2,819.34
6. Step 6: Final answer
   x = 1,628.29