Finding the Fourth Proportional to 2,763.90, 3,831.62 and 2,615.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.90 : 3,831.62 = 2,615.94 : x
2. Step 2: Convert to fraction form
   2,763.90/3,831.62 = 2,615.94/x
3. Step 3: Cross multiply
   2,763.90x = 3,831.62 × 2,615.94
4. Step 4: Simplify right side
   2,763.90x = 10,023,274.94
5. Step 5: Solve for x
   x = 10,023,274.94/2,763.90
6. Step 6: Final answer
   x = 3,626.50