Finding the Fourth Proportional to 2,479.98, 3,720.42 and 2,021.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.98 : 3,720.42 = 2,021.78 : x
2. Step 2: Convert to fraction form
   2,479.98/3,720.42 = 2,021.78/x
3. Step 3: Cross multiply
   2,479.98x = 3,720.42 × 2,021.78
4. Step 4: Simplify right side
   2,479.98x = 7,521,870.75
5. Step 5: Solve for x
   x = 7,521,870.75/2,479.98
6. Step 6: Final answer
   x = 3,033.04