Finding the Fourth Proportional to 2,061.58, 3,091 and 1,330.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.58 : 3,091 = 1,330.75 : x
2. Step 2: Convert to fraction form
   2,061.58/3,091 = 1,330.75/x
3. Step 3: Cross multiply
   2,061.58x = 3,091 × 1,330.75
4. Step 4: Simplify right side
   2,061.58x = 4,113,348.25
5. Step 5: Solve for x
   x = 4,113,348.25/2,061.58
6. Step 6: Final answer
   x = 1,995.24