Finding the Fourth Proportional to 3,612.70, 4,985.29 and 2,019.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,612.70 : 4,985.29 = 2,019.25 : x
2. Step 2: Convert to fraction form
   3,612.70/4,985.29 = 2,019.25/x
3. Step 3: Cross multiply
   3,612.70x = 4,985.29 × 2,019.25
4. Step 4: Simplify right side
   3,612.70x = 10,066,546.83
5. Step 5: Solve for x
   x = 10,066,546.83/3,612.70
6. Step 6: Final answer
   x = 2,786.43