Finding the Fourth Proportional to 2,005.76, 3,009.15 and 619.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.76 : 3,009.15 = 619.25 : x
2. Step 2: Convert to fraction form
   2,005.76/3,009.15 = 619.25/x
3. Step 3: Cross multiply
   2,005.76x = 3,009.15 × 619.25
4. Step 4: Simplify right side
   2,005.76x = 1,863,401.09
5. Step 5: Solve for x
   x = 1,863,401.09/2,005.76
6. Step 6: Final answer
   x = 929.02