Finding the Fourth Proportional to 3,613.16, 4,986.09 and 2,019.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.16 : 4,986.09 = 2,019.82 : x
2. Step 2: Convert to fraction form
   3,613.16/4,986.09 = 2,019.82/x
3. Step 3: Cross multiply
   3,613.16x = 4,986.09 × 2,019.82
4. Step 4: Simplify right side
   3,613.16x = 10,071,004.30
5. Step 5: Solve for x
   x = 10,071,004.30/3,613.16
6. Step 6: Final answer
   x = 2,787.31