Finding the Fourth Proportional to 2,637.36, 3,922.83 and 2,628.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.36 : 3,922.83 = 2,628.45 : x
2. Step 2: Convert to fraction form
   2,637.36/3,922.83 = 2,628.45/x
3. Step 3: Cross multiply
   2,637.36x = 3,922.83 × 2,628.45
4. Step 4: Simplify right side
   2,637.36x = 10,310,962.51
5. Step 5: Solve for x
   x = 10,310,962.51/2,637.36
6. Step 6: Final answer
   x = 3,909.58