Finding the Fourth Proportional to 2,628.85, 3,626.00 and 2,131.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.85 : 3,626.00 = 2,131.51 : x
2. Step 2: Convert to fraction form
   2,628.85/3,626.00 = 2,131.51/x
3. Step 3: Cross multiply
   2,628.85x = 3,626.00 × 2,131.51
4. Step 4: Simplify right side
   2,628.85x = 7,728,844.60
5. Step 5: Solve for x
   x = 7,728,844.60/2,628.85
6. Step 6: Final answer
   x = 2,940.01