Finding the Fourth Proportional to 709,085.48, 978,544.22 and 386,797.01

Step by Step Solution

1. Step 1: Write the proportion equation
   709,085.48 : 978,544.22 = 386,797.01 : x
2. Step 2: Convert to fraction form
   709,085.48/978,544.22 = 386,797.01/x
3. Step 3: Cross multiply
   709,085.48x = 978,544.22 × 386,797.01
4. Step 4: Simplify right side
   709,085.48x = 378,497,978,448.78
5. Step 5: Solve for x
   x = 378,497,978,448.78/709,085.48
6. Step 6: Final answer
   x = 533,783.29