Finding the Fourth Proportional to 2,629.94, 3,942.57 and 985.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629.94 : 3,942.57 = 985.33 : x
2. Step 2: Convert to fraction form
   2,629.94/3,942.57 = 985.33/x
3. Step 3: Cross multiply
   2,629.94x = 3,942.57 × 985.33
4. Step 4: Simplify right side
   2,629.94x = 3,884,741.12
5. Step 5: Solve for x
   x = 3,884,741.12/2,629.94
6. Step 6: Final answer
   x = 1,477.12