Finding the Fourth Proportional to 443,976.32, 612,688.52 and 282,796.88

Step by Step Solution

1. Step 1: Write the proportion equation
   443,976.32 : 612,688.52 = 282,796.88 : x
2. Step 2: Convert to fraction form
   443,976.32/612,688.52 = 282,796.88/x
3. Step 3: Cross multiply
   443,976.32x = 612,688.52 × 282,796.88
4. Step 4: Simplify right side
   443,976.32x = 173,266,401,867.82
5. Step 5: Solve for x
   x = 173,266,401,867.82/443,976.32
6. Step 6: Final answer
   x = 390,260.46