Finding the Fourth Proportional to 2,020.45, 3,025.81 and 1,369.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.45 : 3,025.81 = 1,369.21 : x
2. Step 2: Convert to fraction form
   2,020.45/3,025.81 = 1,369.21/x
3. Step 3: Cross multiply
   2,020.45x = 3,025.81 × 1,369.21
4. Step 4: Simplify right side
   2,020.45x = 4,142,969.31
5. Step 5: Solve for x
   x = 4,142,969.31/2,020.45
6. Step 6: Final answer
   x = 2,050.52