Finding the Fourth Proportional to 2,109.86, 3,163.88 and 723.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.86 : 3,163.88 = 723.33 : x
2. Step 2: Convert to fraction form
   2,109.86/3,163.88 = 723.33/x
3. Step 3: Cross multiply
   2,109.86x = 3,163.88 × 723.33
4. Step 4: Simplify right side
   2,109.86x = 2,288,529.32
5. Step 5: Solve for x
   x = 2,288,529.32/2,109.86
6. Step 6: Final answer
   x = 1,084.68