Finding the Fourth Proportional to 2,213.91, 3,055.16 and 1,219.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.91 : 3,055.16 = 1,219.28 : x
2. Step 2: Convert to fraction form
   2,213.91/3,055.16 = 1,219.28/x
3. Step 3: Cross multiply
   2,213.91x = 3,055.16 × 1,219.28
4. Step 4: Simplify right side
   2,213.91x = 3,725,083.28
5. Step 5: Solve for x
   x = 3,725,083.28/2,213.91
6. Step 6: Final answer
   x = 1,682.58