Finding the Fourth Proportional to 2,223.05, 3,336.32 and 837.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.05 : 3,336.32 = 837.50 : x
2. Step 2: Convert to fraction form
   2,223.05/3,336.32 = 837.50/x
3. Step 3: Cross multiply
   2,223.05x = 3,336.32 × 837.50
4. Step 4: Simplify right side
   2,223.05x = 2,794,153.41
5. Step 5: Solve for x
   x = 2,794,153.41/2,223.05
6. Step 6: Final answer
   x = 1,256.90