Finding the Fourth Proportional to 1,413.03, 1,950.09 and 815.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.03 : 1,950.09 = 815.63 : x
2. Step 2: Convert to fraction form
   1,413.03/1,950.09 = 815.63/x
3. Step 3: Cross multiply
   1,413.03x = 1,950.09 × 815.63
4. Step 4: Simplify right side
   1,413.03x = 1,590,542.16
5. Step 5: Solve for x
   x = 1,590,542.16/1,413.03
6. Step 6: Final answer
   x = 1,125.63