Finding the Fourth Proportional to 645,100.68, 967,011.83 and 302,931.57

Step by Step Solution

1. Step 1: Write the proportion equation
   645,100.68 : 967,011.83 = 302,931.57 : x
2. Step 2: Convert to fraction form
   645,100.68/967,011.83 = 302,931.57/x
3. Step 3: Cross multiply
   645,100.68x = 967,011.83 × 302,931.57
4. Step 4: Simplify right side
   645,100.68x = 292,938,410,355.82
5. Step 5: Solve for x
   x = 292,938,410,355.82/645,100.68
6. Step 6: Final answer
   x = 454,097.20