Finding the Fourth Proportional to 3,699.44, 5,105.20 and 2,020.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.44 : 5,105.20 = 2,020.82 : x
2. Step 2: Convert to fraction form
   3,699.44/5,105.20 = 2,020.82/x
3. Step 3: Cross multiply
   3,699.44x = 5,105.20 × 2,020.82
4. Step 4: Simplify right side
   3,699.44x = 10,316,680.16
5. Step 5: Solve for x
   x = 10,316,680.16/3,699.44
6. Step 6: Final answer
   x = 2,788.72