Finding the Fourth Proportional to 2,520.67, 3,475.40 and 1,622.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.67 : 3,475.40 = 1,622.89 : x
2. Step 2: Convert to fraction form
   2,520.67/3,475.40 = 1,622.89/x
3. Step 3: Cross multiply
   2,520.67x = 3,475.40 × 1,622.89
4. Step 4: Simplify right side
   2,520.67x = 5,640,187.27
5. Step 5: Solve for x
   x = 5,640,187.27/2,520.67
6. Step 6: Final answer
   x = 2,237.58