Finding the Fourth Proportional to 2,630.89, 3,628.61 and 1,636.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.89 : 3,628.61 = 1,636.21 : x
2. Step 2: Convert to fraction form
   2,630.89/3,628.61 = 1,636.21/x
3. Step 3: Cross multiply
   2,630.89x = 3,628.61 × 1,636.21
4. Step 4: Simplify right side
   2,630.89x = 5,937,149.83
5. Step 5: Solve for x
   x = 5,937,149.83/2,630.89
6. Step 6: Final answer
   x = 2,256.71