Finding the Fourth Proportional to 2,187.36, 3,018.60 and 1,715.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.36 : 3,018.60 = 1,715.82 : x
2. Step 2: Convert to fraction form
   2,187.36/3,018.60 = 1,715.82/x
3. Step 3: Cross multiply
   2,187.36x = 3,018.60 × 1,715.82
4. Step 4: Simplify right side
   2,187.36x = 5,179,374.25
5. Step 5: Solve for x
   x = 5,179,374.25/2,187.36
6. Step 6: Final answer
   x = 2,367.87