Finding the Fourth Proportional to 1,016.01, 1,400.82 and 839.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.01 : 1,400.82 = 839.68 : x
2. Step 2: Convert to fraction form
   1,016.01/1,400.82 = 839.68/x
3. Step 3: Cross multiply
   1,016.01x = 1,400.82 × 839.68
4. Step 4: Simplify right side
   1,016.01x = 1,176,240.54
5. Step 5: Solve for x
   x = 1,176,240.54/1,016.01
6. Step 6: Final answer
   x = 1,157.71