Finding the Fourth Proportional to 394,410.72, 591,616.09 and 360,196.32

Step by Step Solution

1. Step 1: Write the proportion equation
   394,410.72 : 591,616.09 = 360,196.32 : x
2. Step 2: Convert to fraction form
   394,410.72/591,616.09 = 360,196.32/x
3. Step 3: Cross multiply
   394,410.72x = 591,616.09 × 360,196.32
4. Step 4: Simplify right side
   394,410.72x = 213,097,938,470.79
5. Step 5: Solve for x
   x = 213,097,938,470.79/394,410.72
6. Step 6: Final answer
   x = 540,294.49