Finding the Fourth Proportional to 2,191.46, 3,287.22 and 1,266.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.46 : 3,287.22 = 1,266.34 : x
2. Step 2: Convert to fraction form
   2,191.46/3,287.22 = 1,266.34/x
3. Step 3: Cross multiply
   2,191.46x = 3,287.22 × 1,266.34
4. Step 4: Simplify right side
   2,191.46x = 4,162,738.17
5. Step 5: Solve for x
   x = 4,162,738.17/2,191.46
6. Step 6: Final answer
   x = 1,899.53