Finding the Fourth Proportional to 2,936.70, 4,404.38 and 856.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,936.70 : 4,404.38 = 856.67 : x
2. Step 2: Convert to fraction form
   2,936.70/4,404.38 = 856.67/x
3. Step 3: Cross multiply
   2,936.70x = 4,404.38 × 856.67
4. Step 4: Simplify right side
   2,936.70x = 3,773,073.91
5. Step 5: Solve for x
   x = 3,773,073.91/2,936.70
6. Step 6: Final answer
   x = 1,284.80