Finding the Fourth Proportional to 2,004.78, 2,767.05 and 1,219.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,004.78 : 2,767.05 = 1,219.35 : x
2. Step 2: Convert to fraction form
   2,004.78/2,767.05 = 1,219.35/x
3. Step 3: Cross multiply
   2,004.78x = 2,767.05 × 1,219.35
4. Step 4: Simplify right side
   2,004.78x = 3,374,002.42
5. Step 5: Solve for x
   x = 3,374,002.42/2,004.78
6. Step 6: Final answer
   x = 1,682.98