Finding the Fourth Proportional to 1,016.91, 1,526.31 and 627.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.91 : 1,526.31 = 627.67 : x
2. Step 2: Convert to fraction form
   1,016.91/1,526.31 = 627.67/x
3. Step 3: Cross multiply
   1,016.91x = 1,526.31 × 627.67
4. Step 4: Simplify right side
   1,016.91x = 958,022.83
5. Step 5: Solve for x
   x = 958,022.83/1,016.91
6. Step 6: Final answer
   x = 942.09