Finding the Fourth Proportional to 1,724.78, 2,375.34 and 1,719.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.78 : 2,375.34 = 1,719.38 : x
2. Step 2: Convert to fraction form
   1,724.78/2,375.34 = 1,719.38/x
3. Step 3: Cross multiply
   1,724.78x = 2,375.34 × 1,719.38
4. Step 4: Simplify right side
   1,724.78x = 4,084,112.09
5. Step 5: Solve for x
   x = 4,084,112.09/1,724.78
6. Step 6: Final answer
   x = 2,367.90