Finding the Fourth Proportional to 709,404.35, 978,969.93 and 387,119.93

Step by Step Solution

1. Step 1: Write the proportion equation
   709,404.35 : 978,969.93 = 387,119.93 : x
2. Step 2: Convert to fraction form
   709,404.35/978,969.93 = 387,119.93/x
3. Step 3: Cross multiply
   709,404.35x = 978,969.93 × 387,119.93
4. Step 4: Simplify right side
   709,404.35x = 378,978,765,878.86
5. Step 5: Solve for x
   x = 378,978,765,878.86/709,404.35
6. Step 6: Final answer
   x = 534,221.09