Finding the Fourth Proportional to 2,816.49, 4,225.82 and 1,085.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.49 : 4,225.82 = 1,085.25 : x
2. Step 2: Convert to fraction form
   2,816.49/4,225.82 = 1,085.25/x
3. Step 3: Cross multiply
   2,816.49x = 4,225.82 × 1,085.25
4. Step 4: Simplify right side
   2,816.49x = 4,586,065.73
5. Step 5: Solve for x
   x = 4,586,065.73/2,816.49
6. Step 6: Final answer
   x = 1,628.29