Finding the Fourth Proportional to 2,631.60, 3,629.16 and 1,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.60 : 3,629.16 = 1,636.50 : x
2. Step 2: Convert to fraction form
   2,631.60/3,629.16 = 1,636.50/x
3. Step 3: Cross multiply
   2,631.60x = 3,629.16 × 1,636.50
4. Step 4: Simplify right side
   2,631.60x = 5,939,120.34
5. Step 5: Solve for x
   x = 5,939,120.34/2,631.60
6. Step 6: Final answer
   x = 2,256.85