Finding the Fourth Proportional to 2,937.82, 4,406.82 and 857.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,937.82 : 4,406.82 = 857.61 : x
2. Step 2: Convert to fraction form
   2,937.82/4,406.82 = 857.61/x
3. Step 3: Cross multiply
   2,937.82x = 4,406.82 × 857.61
4. Step 4: Simplify right side
   2,937.82x = 3,779,336.70
5. Step 5: Solve for x
   x = 3,779,336.70/2,937.82
6. Step 6: Final answer
   x = 1,286.44