Finding the Fourth Proportional to 2,875.72, 4,309.50 and 1,413.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,875.72 : 4,309.50 = 1,413.40 : x
2. Step 2: Convert to fraction form
   2,875.72/4,309.50 = 1,413.40/x
3. Step 3: Cross multiply
   2,875.72x = 4,309.50 × 1,413.40
4. Step 4: Simplify right side
   2,875.72x = 6,091,047.30
5. Step 5: Solve for x
   x = 6,091,047.30/2,875.72
6. Step 6: Final answer
   x = 2,118.09