Finding the Fourth Proportional to 2,936.61, 4,403.85 and 856.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,936.61 : 4,403.85 = 856.09 : x
2. Step 2: Convert to fraction form
   2,936.61/4,403.85 = 856.09/x
3. Step 3: Cross multiply
   2,936.61x = 4,403.85 × 856.09
4. Step 4: Simplify right side
   2,936.61x = 3,770,091.95
5. Step 5: Solve for x
   x = 3,770,091.95/2,936.61
6. Step 6: Final answer
   x = 1,283.82