Finding the Fourth Proportional to 1,016.93, 1,405.25 and 767.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.93 : 1,405.25 = 767.79 : x
2. Step 2: Convert to fraction form
   1,016.93/1,405.25 = 767.79/x
3. Step 3: Cross multiply
   1,016.93x = 1,405.25 × 767.79
4. Step 4: Simplify right side
   1,016.93x = 1,078,933.06
5. Step 5: Solve for x
   x = 1,078,933.06/1,016.93
6. Step 6: Final answer
   x = 1,060.98