Finding the Fourth Proportional to 2,336.59, 3,224.47 and 1,288.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,336.59 : 3,224.47 = 1,288.63 : x
2. Step 2: Convert to fraction form
   2,336.59/3,224.47 = 1,288.63/x
3. Step 3: Cross multiply
   2,336.59x = 3,224.47 × 1,288.63
4. Step 4: Simplify right side
   2,336.59x = 4,155,129.43
5. Step 5: Solve for x
   x = 4,155,129.43/2,336.59
6. Step 6: Final answer
   x = 1,778.29