Finding the Fourth Proportional to 1,413.59, 1,951.11 and 816.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.59 : 1,951.11 = 816.17 : x
2. Step 2: Convert to fraction form
   1,413.59/1,951.11 = 816.17/x
3. Step 3: Cross multiply
   1,413.59x = 1,951.11 × 816.17
4. Step 4: Simplify right side
   1,413.59x = 1,592,427.69
5. Step 5: Solve for x
   x = 1,592,427.69/1,413.59
6. Step 6: Final answer
   x = 1,126.52