Finding the Fourth Proportional to 2,062.59, 3,091.99 and 891.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,062.59 : 3,091.99 = 891.86 : x
2. Step 2: Convert to fraction form
   2,062.59/3,091.99 = 891.86/x
3. Step 3: Cross multiply
   2,062.59x = 3,091.99 × 891.86
4. Step 4: Simplify right side
   2,062.59x = 2,757,622.20
5. Step 5: Solve for x
   x = 2,757,622.20/2,062.59
6. Step 6: Final answer
   x = 1,336.97