Finding the Fourth Proportional to 2,061.45, 3,091.91 and 762.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.45 : 3,091.91 = 762.75 : x
2. Step 2: Convert to fraction form
   2,061.45/3,091.91 = 762.75/x
3. Step 3: Cross multiply
   2,061.45x = 3,091.91 × 762.75
4. Step 4: Simplify right side
   2,061.45x = 2,358,350.54
5. Step 5: Solve for x
   x = 2,358,350.54/2,061.45
6. Step 6: Final answer
   x = 1,144.03