Finding the Fourth Proportional to 2,103.71, 2,902.94 and 1,219.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.71 : 2,902.94 = 1,219.56 : x
2. Step 2: Convert to fraction form
   2,103.71/2,902.94 = 1,219.56/x
3. Step 3: Cross multiply
   2,103.71x = 2,902.94 × 1,219.56
4. Step 4: Simplify right side
   2,103.71x = 3,540,325.73
5. Step 5: Solve for x
   x = 3,540,325.73/2,103.71
6. Step 6: Final answer
   x = 1,682.90