Finding the Fourth Proportional to 2,816.75, 4,226.34 and 1,086.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.75 : 4,226.34 = 1,086.59 : x
2. Step 2: Convert to fraction form
   2,816.75/4,226.34 = 1,086.59/x
3. Step 3: Cross multiply
   2,816.75x = 4,226.34 × 1,086.59
4. Step 4: Simplify right side
   2,816.75x = 4,592,298.78
5. Step 5: Solve for x
   x = 4,592,298.78/2,816.75
6. Step 6: Final answer
   x = 1,630.35