Finding the Fourth Proportional to 2,215.72, 3,320.68 and 1,119.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.72 : 3,320.68 = 1,119.49 : x
2. Step 2: Convert to fraction form
   2,215.72/3,320.68 = 1,119.49/x
3. Step 3: Cross multiply
   2,215.72x = 3,320.68 × 1,119.49
4. Step 4: Simplify right side
   2,215.72x = 3,717,468.05
5. Step 5: Solve for x
   x = 3,717,468.05/2,215.72
6. Step 6: Final answer
   x = 1,677.77