Finding the Fourth Proportional to 2,626.12, 3,629.27 and 2,153.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.12 : 3,629.27 = 2,153.28 : x
2. Step 2: Convert to fraction form
   2,626.12/3,629.27 = 2,153.28/x
3. Step 3: Cross multiply
   2,626.12x = 3,629.27 × 2,153.28
4. Step 4: Simplify right side
   2,626.12x = 7,814,853.50
5. Step 5: Solve for x
   x = 7,814,853.50/2,626.12
6. Step 6: Final answer
   x = 2,975.82