Finding the Fourth Proportional to 2,118.27, 3,178.10 and 1,022.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.27 : 3,178.10 = 1,022.76 : x
2. Step 2: Convert to fraction form
   2,118.27/3,178.10 = 1,022.76/x
3. Step 3: Cross multiply
   2,118.27x = 3,178.10 × 1,022.76
4. Step 4: Simplify right side
   2,118.27x = 3,250,428.44
5. Step 5: Solve for x
   x = 3,250,428.44/2,118.27
6. Step 6: Final answer
   x = 1,534.47