Finding the Fourth Proportional to 1,659.59, 2,469.79 and 1,604.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.59 : 2,469.79 = 1,604.23 : x
2. Step 2: Convert to fraction form
   1,659.59/2,469.79 = 1,604.23/x
3. Step 3: Cross multiply
   1,659.59x = 2,469.79 × 1,604.23
4. Step 4: Simplify right side
   1,659.59x = 3,962,111.21
5. Step 5: Solve for x
   x = 3,962,111.21/1,659.59
6. Step 6: Final answer
   x = 2,387.40