Finding the Fourth Proportional to 1,941.90, 2,912.79 and 1,081.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,941.90 : 2,912.79 = 1,081.68 : x
2. Step 2: Convert to fraction form
   1,941.90/2,912.79 = 1,081.68/x
3. Step 3: Cross multiply
   1,941.90x = 2,912.79 × 1,081.68
4. Step 4: Simplify right side
   1,941.90x = 3,150,706.69
5. Step 5: Solve for x
   x = 3,150,706.69/1,941.90
6. Step 6: Final answer
   x = 1,622.49