Finding the Fourth Proportional to 2,213.93, 3,055.23 and 1,219.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.93 : 3,055.23 = 1,219.31 : x
2. Step 2: Convert to fraction form
   2,213.93/3,055.23 = 1,219.31/x
3. Step 3: Cross multiply
   2,213.93x = 3,055.23 × 1,219.31
4. Step 4: Simplify right side
   2,213.93x = 3,725,272.49
5. Step 5: Solve for x
   x = 3,725,272.49/2,213.93
6. Step 6: Final answer
   x = 1,682.65