Finding the Fourth Proportional to 2,613.42, 3,919.20 and 1,624.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.42 : 3,919.20 = 1,624.71 : x
2. Step 2: Convert to fraction form
   2,613.42/3,919.20 = 1,624.71/x
3. Step 3: Cross multiply
   2,613.42x = 3,919.20 × 1,624.71
4. Step 4: Simplify right side
   2,613.42x = 6,367,563.43
5. Step 5: Solve for x
   x = 6,367,563.43/2,613.42
6. Step 6: Final answer
   x = 2,436.49