Finding the Fourth Proportional to 954,632.71, 1,431,003.18 and 448,287.29

Step by Step Solution

1. Step 1: Write the proportion equation
   954,632.71 : 1,431,003.18 = 448,287.29 : x
2. Step 2: Convert to fraction form
   954,632.71/1,431,003.18 = 448,287.29/x
3. Step 3: Cross multiply
   954,632.71x = 1,431,003.18 × 448,287.29
4. Step 4: Simplify right side
   954,632.71x = 641,500,530,388.57
5. Step 5: Solve for x
   x = 641,500,530,388.57/954,632.71
6. Step 6: Final answer
   x = 671,986.75