Finding the Fourth Proportional to 2,803.52, 4,205.89 and 855.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,803.52 : 4,205.89 = 855.67 : x
2. Step 2: Convert to fraction form
   2,803.52/4,205.89 = 855.67/x
3. Step 3: Cross multiply
   2,803.52x = 4,205.89 × 855.67
4. Step 4: Simplify right side
   2,803.52x = 3,598,853.90
5. Step 5: Solve for x
   x = 3,598,853.90/2,803.52
6. Step 6: Final answer
   x = 1,283.69