Finding the Fourth Proportional to 2,191.34, 3,022.35 and 1,306.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.34 : 3,022.35 = 1,306.96 : x
2. Step 2: Convert to fraction form
   2,191.34/3,022.35 = 1,306.96/x
3. Step 3: Cross multiply
   2,191.34x = 3,022.35 × 1,306.96
4. Step 4: Simplify right side
   2,191.34x = 3,950,078.10
5. Step 5: Solve for x
   x = 3,950,078.10/2,191.34
6. Step 6: Final answer
   x = 1,802.58