Finding the Fourth Proportional to 1,336.22, 1,844.25 and 889.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.22 : 1,844.25 = 889.78 : x
2. Step 2: Convert to fraction form
   1,336.22/1,844.25 = 889.78/x
3. Step 3: Cross multiply
   1,336.22x = 1,844.25 × 889.78
4. Step 4: Simplify right side
   1,336.22x = 1,640,976.77
5. Step 5: Solve for x
   x = 1,640,976.77/1,336.22
6. Step 6: Final answer
   x = 1,228.07