Finding the Fourth Proportional to 1,408.01, 1,942.16 and 935.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.01 : 1,942.16 = 935.89 : x
2. Step 2: Convert to fraction form
   1,408.01/1,942.16 = 935.89/x
3. Step 3: Cross multiply
   1,408.01x = 1,942.16 × 935.89
4. Step 4: Simplify right side
   1,408.01x = 1,817,638.59
5. Step 5: Solve for x
   x = 1,817,638.59/1,408.01
6. Step 6: Final answer
   x = 1,290.93