Finding the Fourth Proportional to 2,176.40, 3,002.52 and 1,618.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176.40 : 3,002.52 = 1,618.20 : x
2. Step 2: Convert to fraction form
   2,176.40/3,002.52 = 1,618.20/x
3. Step 3: Cross multiply
   2,176.40x = 3,002.52 × 1,618.20
4. Step 4: Simplify right side
   2,176.40x = 4,858,662.85
5. Step 5: Solve for x
   x = 4,858,662.85/2,176.40
6. Step 6: Final answer
   x = 2,232.44