Finding the Fourth Proportional to 1,634.37, 2,255.39 and 888.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,634.37 : 2,255.39 = 888.31 : x
2. Step 2: Convert to fraction form
   1,634.37/2,255.39 = 888.31/x
3. Step 3: Cross multiply
   1,634.37x = 2,255.39 × 888.31
4. Step 4: Simplify right side
   1,634.37x = 2,003,469.77
5. Step 5: Solve for x
   x = 2,003,469.77/1,634.37
6. Step 6: Final answer
   x = 1,225.84