Finding the Fourth Proportional to 664,838.72, 997,620.96 and 384,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   664,838.72 : 997,620.96 = 384,902.72 : x
2. Step 2: Convert to fraction form
   664,838.72/997,620.96 = 384,902.72/x
3. Step 3: Cross multiply
   664,838.72x = 997,620.96 × 384,902.72
4. Step 4: Simplify right side
   664,838.72x = 383,987,021,033.01
5. Step 5: Solve for x
   x = 383,987,021,033.01/664,838.72
6. Step 6: Final answer
   x = 577,564.17