Finding the Fourth Proportional to 1,615.18, 2,408.59 and 1,601.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.18 : 2,408.59 = 1,601.28 : x
2. Step 2: Convert to fraction form
   1,615.18/2,408.59 = 1,601.28/x
3. Step 3: Cross multiply
   1,615.18x = 2,408.59 × 1,601.28
4. Step 4: Simplify right side
   1,615.18x = 3,856,827.00
5. Step 5: Solve for x
   x = 3,856,827.00/1,615.18
6. Step 6: Final answer
   x = 2,387.86