Finding the Fourth Proportional to 2,407.38, 3,321.18 and 1,620.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,407.38 : 3,321.18 = 1,620.06 : x
2. Step 2: Convert to fraction form
   2,407.38/3,321.18 = 1,620.06/x
3. Step 3: Cross multiply
   2,407.38x = 3,321.18 × 1,620.06
4. Step 4: Simplify right side
   2,407.38x = 5,380,510.87
5. Step 5: Solve for x
   x = 5,380,510.87/2,407.38
6. Step 6: Final answer
   x = 2,235.01