Finding the Fourth Proportional to 2,061.75, 3,091.41 and 890.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.75 : 3,091.41 = 890.94 : x
2. Step 2: Convert to fraction form
   2,061.75/3,091.41 = 890.94/x
3. Step 3: Cross multiply
   2,061.75x = 3,091.41 × 890.94
4. Step 4: Simplify right side
   2,061.75x = 2,754,260.83
5. Step 5: Solve for x
   x = 2,754,260.83/2,061.75
6. Step 6: Final answer
   x = 1,335.88