Finding the Fourth Proportional to 2,803.82, 4,205.82 and 856.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,803.82 : 4,205.82 = 856.04 : x
2. Step 2: Convert to fraction form
   2,803.82/4,205.82 = 856.04/x
3. Step 3: Cross multiply
   2,803.82x = 4,205.82 × 856.04
4. Step 4: Simplify right side
   2,803.82x = 3,600,350.15
5. Step 5: Solve for x
   x = 3,600,350.15/2,803.82
6. Step 6: Final answer
   x = 1,284.09