Finding the Fourth Proportional to 1,016.31, 1,403.82 and 892.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.31 : 1,403.82 = 892.38 : x
2. Step 2: Convert to fraction form
   1,016.31/1,403.82 = 892.38/x
3. Step 3: Cross multiply
   1,016.31x = 1,403.82 × 892.38
4. Step 4: Simplify right side
   1,016.31x = 1,252,740.89
5. Step 5: Solve for x
   x = 1,252,740.89/1,016.31
6. Step 6: Final answer
   x = 1,232.64