Finding the Fourth Proportional to 1,417.89, 2,126.94 and 443.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.89 : 2,126.94 = 443.97 : x
2. Step 2: Convert to fraction form
   1,417.89/2,126.94 = 443.97/x
3. Step 3: Cross multiply
   1,417.89x = 2,126.94 × 443.97
4. Step 4: Simplify right side
   1,417.89x = 944,297.55
5. Step 5: Solve for x
   x = 944,297.55/1,417.89
6. Step 6: Final answer
   x = 665.99