Finding the Fourth Proportional to 1,941.81, 2,912.75 and 1,081.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,941.81 : 2,912.75 = 1,081.59 : x
2. Step 2: Convert to fraction form
   1,941.81/2,912.75 = 1,081.59/x
3. Step 3: Cross multiply
   1,941.81x = 2,912.75 × 1,081.59
4. Step 4: Simplify right side
   1,941.81x = 3,150,395.86
5. Step 5: Solve for x
   x = 3,150,395.86/1,941.81
6. Step 6: Final answer
   x = 1,622.40