Finding the Fourth Proportional to 2,007.84, 3,015.72 and 1,921.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.84 : 3,015.72 = 1,921.44 : x
2. Step 2: Convert to fraction form
   2,007.84/3,015.72 = 1,921.44/x
3. Step 3: Cross multiply
   2,007.84x = 3,015.72 × 1,921.44
4. Step 4: Simplify right side
   2,007.84x = 5,794,525.04
5. Step 5: Solve for x
   x = 5,794,525.04/2,007.84
6. Step 6: Final answer
   x = 2,885.95