Finding the Fourth Proportional to 2,146.97, 2,962.61 and 1,215.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.97 : 2,962.61 = 1,215.47 : x
2. Step 2: Convert to fraction form
   2,146.97/2,962.61 = 1,215.47/x
3. Step 3: Cross multiply
   2,146.97x = 2,962.61 × 1,215.47
4. Step 4: Simplify right side
   2,146.97x = 3,600,951.80
5. Step 5: Solve for x
   x = 3,600,951.80/2,146.97
6. Step 6: Final answer
   x = 1,677.23