Finding the Fourth Proportional to 2,336.63, 3,224.54 and 1,288.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,336.63 : 3,224.54 = 1,288.69 : x
2. Step 2: Convert to fraction form
   2,336.63/3,224.54 = 1,288.69/x
3. Step 3: Cross multiply
   2,336.63x = 3,224.54 × 1,288.69
4. Step 4: Simplify right side
   2,336.63x = 4,155,427.61
5. Step 5: Solve for x
   x = 4,155,427.61/2,336.63
6. Step 6: Final answer
   x = 1,778.39