Finding the Fourth Proportional to 1,327.39, 1,991.49 and 1,196.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,327.39 : 1,991.49 = 1,196.78 : x
2. Step 2: Convert to fraction form
   1,327.39/1,991.49 = 1,196.78/x
3. Step 3: Cross multiply
   1,327.39x = 1,991.49 × 1,196.78
4. Step 4: Simplify right side
   1,327.39x = 2,383,360.96
5. Step 5: Solve for x
   x = 2,383,360.96/1,327.39
6. Step 6: Final answer
   x = 1,795.53