Finding the Fourth Proportional to 3,616.20, 5,423.58 and 1,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,616.20 : 5,423.58 = 1,018.50 : x
2. Step 2: Convert to fraction form
   3,616.20/5,423.58 = 1,018.50/x
3. Step 3: Cross multiply
   3,616.20x = 5,423.58 × 1,018.50
4. Step 4: Simplify right side
   3,616.20x = 5,523,916.23
5. Step 5: Solve for x
   x = 5,523,916.23/3,616.20
6. Step 6: Final answer
   x = 1,527.55