Finding the Fourth Proportional to 3,511.82, 4,845.71 and 2,168.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,511.82 : 4,845.71 = 2,168.18 : x
2. Step 2: Convert to fraction form
   3,511.82/4,845.71 = 2,168.18/x
3. Step 3: Cross multiply
   3,511.82x = 4,845.71 × 2,168.18
4. Step 4: Simplify right side
   3,511.82x = 10,506,360.67
5. Step 5: Solve for x
   x = 10,506,360.67/3,511.82
6. Step 6: Final answer
   x = 2,991.72