Finding the Fourth Proportional to 3,978.86, 5,964.39 and 2,224.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.86 : 5,964.39 = 2,224.71 : x
2. Step 2: Convert to fraction form
   3,978.86/5,964.39 = 2,224.71/x
3. Step 3: Cross multiply
   3,978.86x = 5,964.39 × 2,224.71
4. Step 4: Simplify right side
   3,978.86x = 13,269,038.08
5. Step 5: Solve for x
   x = 13,269,038.08/3,978.86
6. Step 6: Final answer
   x = 3,334.89