Finding the Fourth Proportional to 501,018.48, 750,739.86 and 387,443.52

Step by Step Solution

1. Step 1: Write the proportion equation
   501,018.48 : 750,739.86 = 387,443.52 : x
2. Step 2: Convert to fraction form
   501,018.48/750,739.86 = 387,443.52/x
3. Step 3: Cross multiply
   501,018.48x = 750,739.86 × 387,443.52
4. Step 4: Simplify right side
   501,018.48x = 290,869,293,962.71
5. Step 5: Solve for x
   x = 290,869,293,962.71/501,018.48
6. Step 6: Final answer
   x = 580,556.02