Finding the Fourth Proportional to 2,213.68, 3,054.89 and 1,219.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.68 : 3,054.89 = 1,219.06 : x
2. Step 2: Convert to fraction form
   2,213.68/3,054.89 = 1,219.06/x
3. Step 3: Cross multiply
   2,213.68x = 3,054.89 × 1,219.06
4. Step 4: Simplify right side
   2,213.68x = 3,724,094.20
5. Step 5: Solve for x
   x = 3,724,094.20/2,213.68
6. Step 6: Final answer
   x = 1,682.31