Finding the Fourth Proportional to 2,146.86, 2,962.71 and 1,215.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.86 : 2,962.71 = 1,215.18 : x
2. Step 2: Convert to fraction form
   2,146.86/2,962.71 = 1,215.18/x
3. Step 3: Cross multiply
   2,146.86x = 2,962.71 × 1,215.18
4. Step 4: Simplify right side
   2,146.86x = 3,600,225.94
5. Step 5: Solve for x
   x = 3,600,225.94/2,146.86
6. Step 6: Final answer
   x = 1,676.97