Finding the Fourth Proportional to 2,615.76, 3,634.78 and 2,583.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.76 : 3,634.78 = 2,583.12 : x
2. Step 2: Convert to fraction form
   2,615.76/3,634.78 = 2,583.12/x
3. Step 3: Cross multiply
   2,615.76x = 3,634.78 × 2,583.12
4. Step 4: Simplify right side
   2,615.76x = 9,389,072.91
5. Step 5: Solve for x
   x = 9,389,072.91/2,615.76
6. Step 6: Final answer
   x = 3,589.42