Finding the Fourth Proportional to 2,420.15, 3,629.67 and 1,120.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,420.15 : 3,629.67 = 1,120.37 : x
2. Step 2: Convert to fraction form
   2,420.15/3,629.67 = 1,120.37/x
3. Step 3: Cross multiply
   2,420.15x = 3,629.67 × 1,120.37
4. Step 4: Simplify right side
   2,420.15x = 4,066,573.38
5. Step 5: Solve for x
   x = 4,066,573.38/2,420.15
6. Step 6: Final answer
   x = 1,680.30