Finding the Fourth Proportional to 1,216.82, 1,678.98 and 744.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216.82 : 1,678.98 = 744.83 : x
2. Step 2: Convert to fraction form
   1,216.82/1,678.98 = 744.83/x
3. Step 3: Cross multiply
   1,216.82x = 1,678.98 × 744.83
4. Step 4: Simplify right side
   1,216.82x = 1,250,546.28
5. Step 5: Solve for x
   x = 1,250,546.28/1,216.82
6. Step 6: Final answer
   x = 1,027.71