Finding the Fourth Proportional to 2,336.51, 3,224.37 and 1,288.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,336.51 : 3,224.37 = 1,288.57 : x
2. Step 2: Convert to fraction form
   2,336.51/3,224.37 = 1,288.57/x
3. Step 3: Cross multiply
   2,336.51x = 3,224.37 × 1,288.57
4. Step 4: Simplify right side
   2,336.51x = 4,154,826.45
5. Step 5: Solve for x
   x = 4,154,826.45/2,336.51
6. Step 6: Final answer
   x = 1,778.22