Finding the Fourth Proportional to 3,613.67, 4,986.79 and 2,020.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.67 : 4,986.79 = 2,020.35 : x
2. Step 2: Convert to fraction form
   3,613.67/4,986.79 = 2,020.35/x
3. Step 3: Cross multiply
   3,613.67x = 4,986.79 × 2,020.35
4. Step 4: Simplify right side
   3,613.67x = 10,075,061.18
5. Step 5: Solve for x
   x = 10,075,061.18/3,613.67
6. Step 6: Final answer
   x = 2,788.04