Finding the Fourth Proportional to 3,699.42, 5,105.18 and 2,020.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.42 : 5,105.18 = 2,020.83 : x
2. Step 2: Convert to fraction form
   3,699.42/5,105.18 = 2,020.83/x
3. Step 3: Cross multiply
   3,699.42x = 5,105.18 × 2,020.83
4. Step 4: Simplify right side
   3,699.42x = 10,316,700.90
5. Step 5: Solve for x
   x = 10,316,700.90/3,699.42
6. Step 6: Final answer
   x = 2,788.73