Finding the Fourth Proportional to 2,336.12, 3,223.86 and 1,288.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,336.12 : 3,223.86 = 1,288.16 : x
2. Step 2: Convert to fraction form
   2,336.12/3,223.86 = 1,288.16/x
3. Step 3: Cross multiply
   2,336.12x = 3,223.86 × 1,288.16
4. Step 4: Simplify right side
   2,336.12x = 4,152,847.50
5. Step 5: Solve for x
   x = 4,152,847.50/2,336.12
6. Step 6: Final answer
   x = 1,777.67