Finding the Fourth Proportional to 1,196.79, 1,650.96 and 777.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.79 : 1,650.96 = 777.38 : x
2. Step 2: Convert to fraction form
   1,196.79/1,650.96 = 777.38/x
3. Step 3: Cross multiply
   1,196.79x = 1,650.96 × 777.38
4. Step 4: Simplify right side
   1,196.79x = 1,283,427.41
5. Step 5: Solve for x
   x = 1,283,427.41/1,196.79
6. Step 6: Final answer
   x = 1,072.39