Finding the Fourth Proportional to 1,078,178.50, 1,616,793.72 and 403,786.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,178.50 : 1,616,793.72 = 403,786.62 : x
2. Step 2: Convert to fraction form
   1,078,178.50/1,616,793.72 = 403,786.62/x
3. Step 3: Cross multiply
   1,078,178.50x = 1,616,793.72 × 403,786.62
4. Step 4: Simplify right side
   1,078,178.50x = 652,839,669,921.83
5. Step 5: Solve for x
   x = 652,839,669,921.83/1,078,178.50
6. Step 6: Final answer
   x = 605,502.40