Finding the Fourth Proportional to 2,146.75, 2,962.56 and 1,215.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.75 : 2,962.56 = 1,215.25 : x
2. Step 2: Convert to fraction form
   2,146.75/2,962.56 = 1,215.25/x
3. Step 3: Cross multiply
   2,146.75x = 2,962.56 × 1,215.25
4. Step 4: Simplify right side
   2,146.75x = 3,600,251.04
5. Step 5: Solve for x
   x = 3,600,251.04/2,146.75
6. Step 6: Final answer
   x = 1,677.07