Finding the Fourth Proportional to 1,962.54, 2,708.81 and 1,216.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.54 : 2,708.81 = 1,216.05 : x
2. Step 2: Convert to fraction form
   1,962.54/2,708.81 = 1,216.05/x
3. Step 3: Cross multiply
   1,962.54x = 2,708.81 × 1,216.05
4. Step 4: Simplify right side
   1,962.54x = 3,294,042.32
5. Step 5: Solve for x
   x = 3,294,042.32/1,962.54
6. Step 6: Final answer
   x = 1,678.46