Finding the Fourth Proportional to 1,939.94, 2,910.56 and 1,413.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939.94 : 2,910.56 = 1,413.32 : x
2. Step 2: Convert to fraction form
   1,939.94/2,910.56 = 1,413.32/x
3. Step 3: Cross multiply
   1,939.94x = 2,910.56 × 1,413.32
4. Step 4: Simplify right side
   1,939.94x = 4,113,552.66
5. Step 5: Solve for x
   x = 4,113,552.66/1,939.94
6. Step 6: Final answer
   x = 2,120.45