Finding the Fourth Proportional to 2,061.46, 3,091.46 and 891.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.46 : 3,091.46 = 891.41 : x
2. Step 2: Convert to fraction form
   2,061.46/3,091.46 = 891.41/x
3. Step 3: Cross multiply
   2,061.46x = 3,091.46 × 891.41
4. Step 4: Simplify right side
   2,061.46x = 2,755,758.36
5. Step 5: Solve for x
   x = 2,755,758.36/2,061.46
6. Step 6: Final answer
   x = 1,336.80