Finding the Fourth Proportional to 2,214.98, 3,056.69 and 1,220.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,214.98 : 3,056.69 = 1,220.29 : x
2. Step 2: Convert to fraction form
   2,214.98/3,056.69 = 1,220.29/x
3. Step 3: Cross multiply
   2,214.98x = 3,056.69 × 1,220.29
4. Step 4: Simplify right side
   2,214.98x = 3,730,034.50
5. Step 5: Solve for x
   x = 3,730,034.50/2,214.98
6. Step 6: Final answer
   x = 1,684.01