Finding the Fourth Proportional to 2,928.86, 4,390.86 and 2,282.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,928.86 : 4,390.86 = 2,282.48 : x
2. Step 2: Convert to fraction form
   2,928.86/4,390.86 = 2,282.48/x
3. Step 3: Cross multiply
   2,928.86x = 4,390.86 × 2,282.48
4. Step 4: Simplify right side
   2,928.86x = 10,022,050.13
5. Step 5: Solve for x
   x = 10,022,050.13/2,928.86
6. Step 6: Final answer
   x = 3,421.83