Finding the Fourth Proportional to 2,210.15, 3,049.86 and 1,215.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.15 : 3,049.86 = 1,215.47 : x
2. Step 2: Convert to fraction form
   2,210.15/3,049.86 = 1,215.47/x
3. Step 3: Cross multiply
   2,210.15x = 3,049.86 × 1,215.47
4. Step 4: Simplify right side
   2,210.15x = 3,707,013.33
5. Step 5: Solve for x
   x = 3,707,013.33/2,210.15
6. Step 6: Final answer
   x = 1,677.27