Finding the Fourth Proportional to 3,699.10, 5,104.79 and 2,020.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.10 : 5,104.79 = 2,020.51 : x
2. Step 2: Convert to fraction form
   3,699.10/5,104.79 = 2,020.51/x
3. Step 3: Cross multiply
   3,699.10x = 5,104.79 × 2,020.51
4. Step 4: Simplify right side
   3,699.10x = 10,314,279.24
5. Step 5: Solve for x
   x = 10,314,279.24/3,699.10
6. Step 6: Final answer
   x = 2,788.32