Finding the Fourth Proportional to 554,978.86, 765,872.74 and 300,329.98

Step by Step Solution

1. Step 1: Write the proportion equation
   554,978.86 : 765,872.74 = 300,329.98 : x
2. Step 2: Convert to fraction form
   554,978.86/765,872.74 = 300,329.98/x
3. Step 3: Cross multiply
   554,978.86x = 765,872.74 × 300,329.98
4. Step 4: Simplify right side
   554,978.86x = 230,014,544,686.75
5. Step 5: Solve for x
   x = 230,014,544,686.75/554,978.86
6. Step 6: Final answer
   x = 414,456.41