Finding the Fourth Proportional to 1,016.92, 1,393.17 and 979.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.92 : 1,393.17 = 979.53 : x
2. Step 2: Convert to fraction form
   1,016.92/1,393.17 = 979.53/x
3. Step 3: Cross multiply
   1,016.92x = 1,393.17 × 979.53
4. Step 4: Simplify right side
   1,016.92x = 1,364,651.81
5. Step 5: Solve for x
   x = 1,364,651.81/1,016.92
6. Step 6: Final answer
   x = 1,341.95