Finding the Fourth Proportional to 2,803.82, 4,206.18 and 855.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,803.82 : 4,206.18 = 855.56 : x
2. Step 2: Convert to fraction form
   2,803.82/4,206.18 = 855.56/x
3. Step 3: Cross multiply
   2,803.82x = 4,206.18 × 855.56
4. Step 4: Simplify right side
   2,803.82x = 3,598,648.27
5. Step 5: Solve for x
   x = 3,598,648.27/2,803.82
6. Step 6: Final answer
   x = 1,283.48