Finding the Fourth Proportional to 3,612.98, 4,985.78 and 2,019.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,612.98 : 4,985.78 = 2,019.61 : x
2. Step 2: Convert to fraction form
   3,612.98/4,985.78 = 2,019.61/x
3. Step 3: Cross multiply
   3,612.98x = 4,985.78 × 2,019.61
4. Step 4: Simplify right side
   3,612.98x = 10,069,331.15
5. Step 5: Solve for x
   x = 10,069,331.15/3,612.98
6. Step 6: Final answer
   x = 2,786.99