Finding the Fourth Proportional to 2,615.79, 3,611.88 and 2,025.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.79 : 3,611.88 = 2,025.30 : x
2. Step 2: Convert to fraction form
   2,615.79/3,611.88 = 2,025.30/x
3. Step 3: Cross multiply
   2,615.79x = 3,611.88 × 2,025.30
4. Step 4: Simplify right side
   2,615.79x = 7,315,140.56
5. Step 5: Solve for x
   x = 7,315,140.56/2,615.79
6. Step 6: Final answer
   x = 2,796.53