Finding the Fourth Proportional to 2,213.78, 3,055.16 and 1,329.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.78 : 3,055.16 = 1,329.54 : x
2. Step 2: Convert to fraction form
   2,213.78/3,055.16 = 1,329.54/x
3. Step 3: Cross multiply
   2,213.78x = 3,055.16 × 1,329.54
4. Step 4: Simplify right side
   2,213.78x = 4,061,957.43
5. Step 5: Solve for x
   x = 4,061,957.43/2,213.78
6. Step 6: Final answer
   x = 1,834.85