Finding the Fourth Proportional to 2,661.03, 3,990.69 and 929.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.03 : 3,990.69 = 929.25 : x
2. Step 2: Convert to fraction form
   2,661.03/3,990.69 = 929.25/x
3. Step 3: Cross multiply
   2,661.03x = 3,990.69 × 929.25
4. Step 4: Simplify right side
   2,661.03x = 3,708,348.68
5. Step 5: Solve for x
   x = 3,708,348.68/2,661.03
6. Step 6: Final answer
   x = 1,393.58