Finding the Fourth Proportional to 2,317.82, 3,475.31 and 856.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.82 : 3,475.31 = 856.17 : x
2. Step 2: Convert to fraction form
   2,317.82/3,475.31 = 856.17/x
3. Step 3: Cross multiply
   2,317.82x = 3,475.31 × 856.17
4. Step 4: Simplify right side
   2,317.82x = 2,975,451.88
5. Step 5: Solve for x
   x = 2,975,451.88/2,317.82
6. Step 6: Final answer
   x = 1,283.73