Finding the Fourth Proportional to 2,187.33, 3,018.50 and 1,192.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.33 : 3,018.50 = 1,192.61 : x
2. Step 2: Convert to fraction form
   2,187.33/3,018.50 = 1,192.61/x
3. Step 3: Cross multiply
   2,187.33x = 3,018.50 × 1,192.61
4. Step 4: Simplify right side
   2,187.33x = 3,599,881.17
5. Step 5: Solve for x
   x = 3,599,881.17/2,187.33
6. Step 6: Final answer
   x = 1,645.79