Finding the Fourth Proportional to 2,651.84, 3,976.56 and 919.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.84 : 3,976.56 = 919.24 : x
2. Step 2: Convert to fraction form
   2,651.84/3,976.56 = 919.24/x
3. Step 3: Cross multiply
   2,651.84x = 3,976.56 × 919.24
4. Step 4: Simplify right side
   2,651.84x = 3,655,413.01
5. Step 5: Solve for x
   x = 3,655,413.01/2,651.84
6. Step 6: Final answer
   x = 1,378.44