Finding the Fourth Proportional to 2,445.55, 3,661.34 and 1,622.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.55 : 3,661.34 = 1,622.18 : x
2. Step 2: Convert to fraction form
   2,445.55/3,661.34 = 1,622.18/x
3. Step 3: Cross multiply
   2,445.55x = 3,661.34 × 1,622.18
4. Step 4: Simplify right side
   2,445.55x = 5,939,353.56
5. Step 5: Solve for x
   x = 5,939,353.56/2,445.55
6. Step 6: Final answer
   x = 2,428.64