Finding the Fourth Proportional to 1,990.66, 2,747.37 and 1,204.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.66 : 2,747.37 = 1,204.72 : x
2. Step 2: Convert to fraction form
   1,990.66/2,747.37 = 1,204.72/x
3. Step 3: Cross multiply
   1,990.66x = 2,747.37 × 1,204.72
4. Step 4: Simplify right side
   1,990.66x = 3,309,811.59
5. Step 5: Solve for x
   x = 3,309,811.59/1,990.66
6. Step 6: Final answer
   x = 1,662.67