Finding the Fourth Proportional to 3,613.42, 4,985.87 and 2,020.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.42 : 4,985.87 = 2,020.10 : x
2. Step 2: Convert to fraction form
   3,613.42/4,985.87 = 2,020.10/x
3. Step 3: Cross multiply
   3,613.42x = 4,985.87 × 2,020.10
4. Step 4: Simplify right side
   3,613.42x = 10,071,930.31
5. Step 5: Solve for x
   x = 10,071,930.31/3,613.42
6. Step 6: Final answer
   x = 2,787.37