Finding the Fourth Proportional to 2,664.39, 3,995.16 and 1,019.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664.39 : 3,995.16 = 1,019.99 : x
2. Step 2: Convert to fraction form
   2,664.39/3,995.16 = 1,019.99/x
3. Step 3: Cross multiply
   2,664.39x = 3,995.16 × 1,019.99
4. Step 4: Simplify right side
   2,664.39x = 4,075,003.27
5. Step 5: Solve for x
   x = 4,075,003.27/2,664.39
6. Step 6: Final answer
   x = 1,529.43