Finding the Fourth Proportional to 2,081.05, 3,118.87 and 847.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.05 : 3,118.87 = 847.02 : x
2. Step 2: Convert to fraction form
   2,081.05/3,118.87 = 847.02/x
3. Step 3: Cross multiply
   2,081.05x = 3,118.87 × 847.02
4. Step 4: Simplify right side
   2,081.05x = 2,641,745.27
5. Step 5: Solve for x
   x = 2,641,745.27/2,081.05
6. Step 6: Final answer
   x = 1,269.43