Finding the Fourth Proportional to 2,238.16, 3,356.31 and 922.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.16 : 3,356.31 = 922.60 : x
2. Step 2: Convert to fraction form
   2,238.16/3,356.31 = 922.60/x
3. Step 3: Cross multiply
   2,238.16x = 3,356.31 × 922.60
4. Step 4: Simplify right side
   2,238.16x = 3,096,531.61
5. Step 5: Solve for x
   x = 3,096,531.61/2,238.16
6. Step 6: Final answer
   x = 1,383.52