Finding the Fourth Proportional to 3,618.50, 5,423.67 and 1,974.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,618.50 : 5,423.67 = 1,974.50 : x
2. Step 2: Convert to fraction form
   3,618.50/5,423.67 = 1,974.50/x
3. Step 3: Cross multiply
   3,618.50x = 5,423.67 × 1,974.50
4. Step 4: Simplify right side
   3,618.50x = 10,709,036.42
5. Step 5: Solve for x
   x = 10,709,036.42/3,618.50
6. Step 6: Final answer
   x = 2,959.52