Finding the Fourth Proportional to 2,187.34, 3,018.56 and 1,192.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.34 : 3,018.56 = 1,192.64 : x
2. Step 2: Convert to fraction form
   2,187.34/3,018.56 = 1,192.64/x
3. Step 3: Cross multiply
   2,187.34x = 3,018.56 × 1,192.64
4. Step 4: Simplify right side
   2,187.34x = 3,600,034.34
5. Step 5: Solve for x
   x = 3,600,034.34/2,187.34
6. Step 6: Final answer
   x = 1,645.85