Finding the Fourth Proportional to 2,108.10, 3,162.06 and 722.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.10 : 3,162.06 = 722.10 : x
2. Step 2: Convert to fraction form
   2,108.10/3,162.06 = 722.10/x
3. Step 3: Cross multiply
   2,108.10x = 3,162.06 × 722.10
4. Step 4: Simplify right side
   2,108.10x = 2,283,323.53
5. Step 5: Solve for x
   x = 2,283,323.53/2,108.10
6. Step 6: Final answer
   x = 1,083.12