Finding the Fourth Proportional to 2,203.89, 3,306.12 and 722.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,203.89 : 3,306.12 = 722.61 : x
2. Step 2: Convert to fraction form
   2,203.89/3,306.12 = 722.61/x
3. Step 3: Cross multiply
   2,203.89x = 3,306.12 × 722.61
4. Step 4: Simplify right side
   2,203.89x = 2,389,035.37
5. Step 5: Solve for x
   x = 2,389,035.37/2,203.89
6. Step 6: Final answer
   x = 1,084.01