Finding the Fourth Proportional to 2,937.42, 4,406.20 and 857.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,937.42 : 4,406.20 = 857.37 : x
2. Step 2: Convert to fraction form
   2,937.42/4,406.20 = 857.37/x
3. Step 3: Cross multiply
   2,937.42x = 4,406.20 × 857.37
4. Step 4: Simplify right side
   2,937.42x = 3,777,743.69
5. Step 5: Solve for x
   x = 3,777,743.69/2,937.42
6. Step 6: Final answer
   x = 1,286.08