Finding the Fourth Proportional to 978,849.56, 1,468,105.05 and 259,201.62

Step by Step Solution

1. Step 1: Write the proportion equation
   978,849.56 : 1,468,105.05 = 259,201.62 : x
2. Step 2: Convert to fraction form
   978,849.56/1,468,105.05 = 259,201.62/x
3. Step 3: Cross multiply
   978,849.56x = 1,468,105.05 × 259,201.62
4. Step 4: Simplify right side
   978,849.56x = 380,535,208,262.19
5. Step 5: Solve for x
   x = 380,535,208,262.19/978,849.56
6. Step 6: Final answer
   x = 388,757.60