Finding the Fourth Proportional to 1,645.67, 2,270.72 and 1,016.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.67 : 2,270.72 = 1,016.73 : x
2. Step 2: Convert to fraction form
   1,645.67/2,270.72 = 1,016.73/x
3. Step 3: Cross multiply
   1,645.67x = 2,270.72 × 1,016.73
4. Step 4: Simplify right side
   1,645.67x = 2,308,704.06
5. Step 5: Solve for x
   x = 2,308,704.06/1,645.67
6. Step 6: Final answer
   x = 1,402.90