Finding the Fourth Proportional to 756,573.78, 1,135,131.69 and 324,109.83

Step by Step Solution

1. Step 1: Write the proportion equation
   756,573.78 : 1,135,131.69 = 324,109.83 : x
2. Step 2: Convert to fraction form
   756,573.78/1,135,131.69 = 324,109.83/x
3. Step 3: Cross multiply
   756,573.78x = 1,135,131.69 × 324,109.83
4. Step 4: Simplify right side
   756,573.78x = 367,907,339,073.51
5. Step 5: Solve for x
   x = 367,907,339,073.51/756,573.78
6. Step 6: Final answer
   x = 486,280.85