Finding the Fourth Proportional to 1,615.89, 2,425.05 and 1,067.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.89 : 2,425.05 = 1,067.88 : x
2. Step 2: Convert to fraction form
   1,615.89/2,425.05 = 1,067.88/x
3. Step 3: Cross multiply
   1,615.89x = 2,425.05 × 1,067.88
4. Step 4: Simplify right side
   1,615.89x = 2,589,662.39
5. Step 5: Solve for x
   x = 2,589,662.39/1,615.89
6. Step 6: Final answer
   x = 1,602.62