Finding the Fourth Proportional to 2,210.38, 3,050.18 and 1,215.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.38 : 3,050.18 = 1,215.56 : x
2. Step 2: Convert to fraction form
   2,210.38/3,050.18 = 1,215.56/x
3. Step 3: Cross multiply
   2,210.38x = 3,050.18 × 1,215.56
4. Step 4: Simplify right side
   2,210.38x = 3,707,676.80
5. Step 5: Solve for x
   x = 3,707,676.80/2,210.38
6. Step 6: Final answer
   x = 1,677.39