Finding the Fourth Proportional to 2,040.48, 3,061.68 and 930.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.48 : 3,061.68 = 930.12 : x
2. Step 2: Convert to fraction form
   2,040.48/3,061.68 = 930.12/x
3. Step 3: Cross multiply
   2,040.48x = 3,061.68 × 930.12
4. Step 4: Simplify right side
   2,040.48x = 2,847,729.80
5. Step 5: Solve for x
   x = 2,847,729.80/2,040.48
6. Step 6: Final answer
   x = 1,395.62