Finding the Fourth Proportional to 2,640.92, 3,644.46 and 1,522.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.92 : 3,644.46 = 1,522.06 : x
2. Step 2: Convert to fraction form
   2,640.92/3,644.46 = 1,522.06/x
3. Step 3: Cross multiply
   2,640.92x = 3,644.46 × 1,522.06
4. Step 4: Simplify right side
   2,640.92x = 5,547,068.57
5. Step 5: Solve for x
   x = 5,547,068.57/2,640.92
6. Step 6: Final answer
   x = 2,100.43