Finding the Fourth Proportional to 936.17, 1,404.15 and 677.39

Step by Step Solution

1. Step 1: Write the proportion equation
   936.17 : 1,404.15 = 677.39 : x
2. Step 2: Convert to fraction form
   936.17/1,404.15 = 677.39/x
3. Step 3: Cross multiply
   936.17x = 1,404.15 × 677.39
4. Step 4: Simplify right side
   936.17x = 951,150.15
5. Step 5: Solve for x
   x = 951,150.15/936.17
6. Step 6: Final answer
   x = 1,016.01