Finding the Fourth Proportional to 3,184.86, 4,389.39 and 2,238.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,184.86 : 4,389.39 = 2,238.78 : x
2. Step 2: Convert to fraction form
   3,184.86/4,389.39 = 2,238.78/x
3. Step 3: Cross multiply
   3,184.86x = 4,389.39 × 2,238.78
4. Step 4: Simplify right side
   3,184.86x = 9,826,878.54
5. Step 5: Solve for x
   x = 9,826,878.54/3,184.86
6. Step 6: Final answer
   x = 3,085.50