Finding the Fourth Proportional to 2,223.98, 3,332.37 and 836.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.98 : 3,332.37 = 836.72 : x
2. Step 2: Convert to fraction form
   2,223.98/3,332.37 = 836.72/x
3. Step 3: Cross multiply
   2,223.98x = 3,332.37 × 836.72
4. Step 4: Simplify right side
   2,223.98x = 2,788,260.63
5. Step 5: Solve for x
   x = 2,788,260.63/2,223.98
6. Step 6: Final answer
   x = 1,253.73