Finding the Fourth Proportional to 539,185.56, 744,078.54 and 297,468

Step by Step Solution

1. Step 1: Write the proportion equation
   539,185.56 : 744,078.54 = 297,468 : x
2. Step 2: Convert to fraction form
   539,185.56/744,078.54 = 297,468/x
3. Step 3: Cross multiply
   539,185.56x = 744,078.54 × 297,468
4. Step 4: Simplify right side
   539,185.56x = 221,339,555,136.72
5. Step 5: Solve for x
   x = 221,339,555,136.72/539,185.56
6. Step 6: Final answer
   x = 410,507.20