Finding the Fourth Proportional to 3,613.41, 4,986 and 2,019.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.41 : 4,986 = 2,019.87 : x
2. Step 2: Convert to fraction form
   3,613.41/4,986 = 2,019.87/x
3. Step 3: Cross multiply
   3,613.41x = 4,986 × 2,019.87
4. Step 4: Simplify right side
   3,613.41x = 10,071,071.82
5. Step 5: Solve for x
   x = 10,071,071.82/3,613.41
6. Step 6: Final answer
   x = 2,787.14