Finding the Fourth Proportional to 1,672.38, 2,310.39 and 1,659.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.38 : 2,310.39 = 1,659.42 : x
2. Step 2: Convert to fraction form
   1,672.38/2,310.39 = 1,659.42/x
3. Step 3: Cross multiply
   1,672.38x = 2,310.39 × 1,659.42
4. Step 4: Simplify right side
   1,672.38x = 3,833,907.37
5. Step 5: Solve for x
   x = 3,833,907.37/1,672.38
6. Step 6: Final answer
   x = 2,292.49