Finding the Fourth Proportional to 671,144.72, 926,179.85 and 369,338.72

Step by Step Solution

1. Step 1: Write the proportion equation
   671,144.72 : 926,179.85 = 369,338.72 : x
2. Step 2: Convert to fraction form
   671,144.72/926,179.85 = 369,338.72/x
3. Step 3: Cross multiply
   671,144.72x = 926,179.85 × 369,338.72
4. Step 4: Simplify right side
   671,144.72x = 342,074,078,442.10
5. Step 5: Solve for x
   x = 342,074,078,442.10/671,144.72
6. Step 6: Final answer
   x = 509,687.51