Finding the Fourth Proportional to 2,222.61, 3,335.58 and 837.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.61 : 3,335.58 = 837.31 : x
2. Step 2: Convert to fraction form
   2,222.61/3,335.58 = 837.31/x
3. Step 3: Cross multiply
   2,222.61x = 3,335.58 × 837.31
4. Step 4: Simplify right side
   2,222.61x = 2,792,914.49
5. Step 5: Solve for x
   x = 2,792,914.49/2,222.61
6. Step 6: Final answer
   x = 1,256.59