Finding the Fourth Proportional to 2,222.88, 3,333.69 and 836.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.88 : 3,333.69 = 836.09 : x
2. Step 2: Convert to fraction form
   2,222.88/3,333.69 = 836.09/x
3. Step 3: Cross multiply
   2,222.88x = 3,333.69 × 836.09
4. Step 4: Simplify right side
   2,222.88x = 2,787,273.21
5. Step 5: Solve for x
   x = 2,787,273.21/2,222.88
6. Step 6: Final answer
   x = 1,253.90