Finding the Fourth Proportional to 2,215.68, 3,325.56 and 1,120.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.68 : 3,325.56 = 1,120.82 : x
2. Step 2: Convert to fraction form
   2,215.68/3,325.56 = 1,120.82/x
3. Step 3: Cross multiply
   2,215.68x = 3,325.56 × 1,120.82
4. Step 4: Simplify right side
   2,215.68x = 3,727,337.53
5. Step 5: Solve for x
   x = 3,727,337.53/2,215.68
6. Step 6: Final answer
   x = 1,682.25