Finding the Fourth Proportional to 2,336.37, 3,224.21 and 1,288.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,336.37 : 3,224.21 = 1,288.47 : x
2. Step 2: Convert to fraction form
   2,336.37/3,224.21 = 1,288.47/x
3. Step 3: Cross multiply
   2,336.37x = 3,224.21 × 1,288.47
4. Step 4: Simplify right side
   2,336.37x = 4,154,297.86
5. Step 5: Solve for x
   x = 4,154,297.86/2,336.37
6. Step 6: Final answer
   x = 1,778.10