Finding the Fourth Proportional to 1,413.30, 2,109.71 and 1,240.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.30 : 2,109.71 = 1,240.50 : x
2. Step 2: Convert to fraction form
   1,413.30/2,109.71 = 1,240.50/x
3. Step 3: Cross multiply
   1,413.30x = 2,109.71 × 1,240.50
4. Step 4: Simplify right side
   1,413.30x = 2,617,089.05
5. Step 5: Solve for x
   x = 2,617,089.05/1,413.30
6. Step 6: Final answer
   x = 1,851.76