Finding the Fourth Proportional to 2,479.88, 3,720.43 and 1,019.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.88 : 3,720.43 = 1,019.45 : x
2. Step 2: Convert to fraction form
   2,479.88/3,720.43 = 1,019.45/x
3. Step 3: Cross multiply
   2,479.88x = 3,720.43 × 1,019.45
4. Step 4: Simplify right side
   2,479.88x = 3,792,802.94
5. Step 5: Solve for x
   x = 3,792,802.94/2,479.88
6. Step 6: Final answer
   x = 1,529.43