Finding the Fourth Proportional to 2,222.42, 3,331.28 and 834.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.42 : 3,331.28 = 834.86 : x
2. Step 2: Convert to fraction form
   2,222.42/3,331.28 = 834.86/x
3. Step 3: Cross multiply
   2,222.42x = 3,331.28 × 834.86
4. Step 4: Simplify right side
   2,222.42x = 2,781,152.42
5. Step 5: Solve for x
   x = 2,781,152.42/2,222.42
6. Step 6: Final answer
   x = 1,251.41