Finding the Fourth Proportional to 1,976.72, 2,727.17 and 1,230.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.72 : 2,727.17 = 1,230.39 : x
2. Step 2: Convert to fraction form
   1,976.72/2,727.17 = 1,230.39/x
3. Step 3: Cross multiply
   1,976.72x = 2,727.17 × 1,230.39
4. Step 4: Simplify right side
   1,976.72x = 3,355,476.54
5. Step 5: Solve for x
   x = 3,355,476.54/1,976.72
6. Step 6: Final answer
   x = 1,697.50