Finding the Fourth Proportional to 2,803.83, 4,205.82 and 856.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,803.83 : 4,205.82 = 856.02 : x
2. Step 2: Convert to fraction form
   2,803.83/4,205.82 = 856.02/x
3. Step 3: Cross multiply
   2,803.83x = 4,205.82 × 856.02
4. Step 4: Simplify right side
   2,803.83x = 3,600,266.04
5. Step 5: Solve for x
   x = 3,600,266.04/2,803.83
6. Step 6: Final answer
   x = 1,284.05