Finding the Fourth Proportional to 3,419.10, 4,721.15 and 2,162.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,419.10 : 4,721.15 = 2,162.18 : x
2. Step 2: Convert to fraction form
   3,419.10/4,721.15 = 2,162.18/x
3. Step 3: Cross multiply
   3,419.10x = 4,721.15 × 2,162.18
4. Step 4: Simplify right side
   3,419.10x = 10,207,993.32
5. Step 5: Solve for x
   x = 10,207,993.32/3,419.10
6. Step 6: Final answer
   x = 2,985.58