Finding the Fourth Proportional to 2,096.90, 2,894.07 and 1,213.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,096.90 : 2,894.07 = 1,213.20 : x
2. Step 2: Convert to fraction form
   2,096.90/2,894.07 = 1,213.20/x
3. Step 3: Cross multiply
   2,096.90x = 2,894.07 × 1,213.20
4. Step 4: Simplify right side
   2,096.90x = 3,511,085.72
5. Step 5: Solve for x
   x = 3,511,085.72/2,096.90
6. Step 6: Final answer
   x = 1,674.42