Finding the Fourth Proportional to 2,611.30, 3,601.48 and 1,615.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.30 : 3,601.48 = 1,615.88 : x
2. Step 2: Convert to fraction form
   2,611.30/3,601.48 = 1,615.88/x
3. Step 3: Cross multiply
   2,611.30x = 3,601.48 × 1,615.88
4. Step 4: Simplify right side
   2,611.30x = 5,819,559.50
5. Step 5: Solve for x
   x = 5,819,559.50/2,611.30
6. Step 6: Final answer
   x = 2,228.61