Finding the Fourth Proportional to 2,636.81, 3,637.83 and 2,031.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.81 : 3,637.83 = 2,031.33 : x
2. Step 2: Convert to fraction form
   2,636.81/3,637.83 = 2,031.33/x
3. Step 3: Cross multiply
   2,636.81x = 3,637.83 × 2,031.33
4. Step 4: Simplify right side
   2,636.81x = 7,389,633.21
5. Step 5: Solve for x
   x = 7,389,633.21/2,636.81
6. Step 6: Final answer
   x = 2,802.50