Finding the Fourth Proportional to 645,513.83, 966,200.38 and 345,243.59

Step by Step Solution

1. Step 1: Write the proportion equation
   645,513.83 : 966,200.38 = 345,243.59 : x
2. Step 2: Convert to fraction form
   645,513.83/966,200.38 = 345,243.59/x
3. Step 3: Cross multiply
   645,513.83x = 966,200.38 × 345,243.59
4. Step 4: Simplify right side
   645,513.83x = 333,574,487,850.56
5. Step 5: Solve for x
   x = 333,574,487,850.56/645,513.83
6. Step 6: Final answer
   x = 516,758.08