Finding the Fourth Proportional to 2,210.06, 3,049.90 and 1,215.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.06 : 3,049.90 = 1,215.35 : x
2. Step 2: Convert to fraction form
   2,210.06/3,049.90 = 1,215.35/x
3. Step 3: Cross multiply
   2,210.06x = 3,049.90 × 1,215.35
4. Step 4: Simplify right side
   2,210.06x = 3,706,685.30
5. Step 5: Solve for x
   x = 3,706,685.30/2,210.06
6. Step 6: Final answer
   x = 1,677.19