Finding the Fourth Proportional to 686,426.16, 946,706.49 and 483,150

Step by Step Solution

1. Step 1: Write the proportion equation
   686,426.16 : 946,706.49 = 483,150 : x
2. Step 2: Convert to fraction form
   686,426.16/946,706.49 = 483,150/x
3. Step 3: Cross multiply
   686,426.16x = 946,706.49 × 483,150
4. Step 4: Simplify right side
   686,426.16x = 457,401,240,643.50
5. Step 5: Solve for x
   x = 457,401,240,643.50/686,426.16
6. Step 6: Final answer
   x = 666,351.70