Finding the Fourth Proportional to 3,192.03, 4,783.61 and 1,215.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,192.03 : 4,783.61 = 1,215.61 : x
2. Step 2: Convert to fraction form
   3,192.03/4,783.61 = 1,215.61/x
3. Step 3: Cross multiply
   3,192.03x = 4,783.61 × 1,215.61
4. Step 4: Simplify right side
   3,192.03x = 5,814,988.39
5. Step 5: Solve for x
   x = 5,814,988.39/3,192.03
6. Step 6: Final answer
   x = 1,821.72