Finding the Fourth Proportional to 718,995.27, 992,573.01 and 447,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   718,995.27 : 992,573.01 = 447,150.72 : x
2. Step 2: Convert to fraction form
   718,995.27/992,573.01 = 447,150.72/x
3. Step 3: Cross multiply
   718,995.27x = 992,573.01 × 447,150.72
4. Step 4: Simplify right side
   718,995.27x = 443,829,736,074.07
5. Step 5: Solve for x
   x = 443,829,736,074.07/718,995.27
6. Step 6: Final answer
   x = 617,291.59