Finding the Fourth Proportional to 1,016.68, 1,401.78 and 893.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.68 : 1,401.78 = 893.56 : x
2. Step 2: Convert to fraction form
   1,016.68/1,401.78 = 893.56/x
3. Step 3: Cross multiply
   1,016.68x = 1,401.78 × 893.56
4. Step 4: Simplify right side
   1,016.68x = 1,252,574.54
5. Step 5: Solve for x
   x = 1,252,574.54/1,016.68
6. Step 6: Final answer
   x = 1,232.02