Finding the Fourth Proportional to 2,629.10, 3,685.60 and 2,629.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629.10 : 3,685.60 = 2,629.10 : x
2. Step 2: Convert to fraction form
   2,629.10/3,685.60 = 2,629.10/x
3. Step 3: Cross multiply
   2,629.10x = 3,685.60 × 2,629.10
4. Step 4: Simplify right side
   2,629.10x = 9,689,810.96
5. Step 5: Solve for x
   x = 9,689,810.96/2,629.10
6. Step 6: Final answer
   x = 3,685.60