Finding the Fourth Proportional to 2,338.16, 3,504.56 and 856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,338.16 : 3,504.56 = 856.72 : x
2. Step 2: Convert to fraction form
   2,338.16/3,504.56 = 856.72/x
3. Step 3: Cross multiply
   2,338.16x = 3,504.56 × 856.72
4. Step 4: Simplify right side
   2,338.16x = 3,002,426.64
5. Step 5: Solve for x
   x = 3,002,426.64/2,338.16
6. Step 6: Final answer
   x = 1,284.10