Finding the Fourth Proportional to 2,640.64, 3,644.89 and 1,522.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.64 : 3,644.89 = 1,522.32 : x
2. Step 2: Convert to fraction form
   2,640.64/3,644.89 = 1,522.32/x
3. Step 3: Cross multiply
   2,640.64x = 3,644.89 × 1,522.32
4. Step 4: Simplify right side
   2,640.64x = 5,548,699.96
5. Step 5: Solve for x
   x = 5,548,699.96/2,640.64
6. Step 6: Final answer
   x = 2,101.27