Finding the Fourth Proportional to 2,118.27, 3,178.05 and 1,022.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.27 : 3,178.05 = 1,022.43 : x
2. Step 2: Convert to fraction form
   2,118.27/3,178.05 = 1,022.43/x
3. Step 3: Cross multiply
   2,118.27x = 3,178.05 × 1,022.43
4. Step 4: Simplify right side
   2,118.27x = 3,249,333.66
5. Step 5: Solve for x
   x = 3,249,333.66/2,118.27
6. Step 6: Final answer
   x = 1,533.96