Finding the Fourth Proportional to 2,407.81, 3,325.52 and 1,620.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,407.81 : 3,325.52 = 1,620.49 : x
2. Step 2: Convert to fraction form
   2,407.81/3,325.52 = 1,620.49/x
3. Step 3: Cross multiply
   2,407.81x = 3,325.52 × 1,620.49
4. Step 4: Simplify right side
   2,407.81x = 5,388,971.90
5. Step 5: Solve for x
   x = 5,388,971.90/2,407.81
6. Step 6: Final answer
   x = 2,238.12