Finding the Fourth Proportional to 443,822.76, 612,303.30 and 282,648.96

Step by Step Solution

1. Step 1: Write the proportion equation
   443,822.76 : 612,303.30 = 282,648.96 : x
2. Step 2: Convert to fraction form
   443,822.76/612,303.30 = 282,648.96/x
3. Step 3: Cross multiply
   443,822.76x = 612,303.30 × 282,648.96
4. Step 4: Simplify right side
   443,822.76x = 173,066,890,949.57
5. Step 5: Solve for x
   x = 173,066,890,949.57/443,822.76
6. Step 6: Final answer
   x = 389,945.96