Finding the Fourth Proportional to 2,847.18, 4,271.39 and 872.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,847.18 : 4,271.39 = 872.82 : x
2. Step 2: Convert to fraction form
   2,847.18/4,271.39 = 872.82/x
3. Step 3: Cross multiply
   2,847.18x = 4,271.39 × 872.82
4. Step 4: Simplify right side
   2,847.18x = 3,728,137.51
5. Step 5: Solve for x
   x = 3,728,137.51/2,847.18
6. Step 6: Final answer
   x = 1,309.41