Finding the Fourth Proportional to 2,629.82, 3,943.61 and 985.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629.82 : 3,943.61 = 985.22 : x
2. Step 2: Convert to fraction form
   2,629.82/3,943.61 = 985.22/x
3. Step 3: Cross multiply
   2,629.82x = 3,943.61 × 985.22
4. Step 4: Simplify right side
   2,629.82x = 3,885,323.44
5. Step 5: Solve for x
   x = 3,885,323.44/2,629.82
6. Step 6: Final answer
   x = 1,477.41