Finding the Fourth Proportional to 1,413.31, 2,117.91 and 682.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.31 : 2,117.91 = 682.03 : x
2. Step 2: Convert to fraction form
   1,413.31/2,117.91 = 682.03/x
3. Step 3: Cross multiply
   1,413.31x = 2,117.91 × 682.03
4. Step 4: Simplify right side
   1,413.31x = 1,444,478.16
5. Step 5: Solve for x
   x = 1,444,478.16/1,413.31
6. Step 6: Final answer
   x = 1,022.05