Finding the Fourth Proportional to 2,146.50, 2,962.18 and 1,215

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.50 : 2,962.18 = 1,215 : x
2. Step 2: Convert to fraction form
   2,146.50/2,962.18 = 1,215/x
3. Step 3: Cross multiply
   2,146.50x = 2,962.18 × 1,215
4. Step 4: Simplify right side
   2,146.50x = 3,599,048.70
5. Step 5: Solve for x
   x = 3,599,048.70/2,146.50
6. Step 6: Final answer
   x = 1,676.71