Finding the Fourth Proportional to 888,234, 1,332,362.34 and 257,148.42

Step by Step Solution

1. Step 1: Write the proportion equation
   888,234 : 1,332,362.34 = 257,148.42 : x
2. Step 2: Convert to fraction form
   888,234/1,332,362.34 = 257,148.42/x
3. Step 3: Cross multiply
   888,234x = 1,332,362.34 × 257,148.42
4. Step 4: Simplify right side
   888,234x = 342,614,870,598.50
5. Step 5: Solve for x
   x = 342,614,870,598.50/888,234
6. Step 6: Final answer
   x = 385,725.91