Finding the Fourth Proportional to 2,103.72, 2,903.14 and 1,219.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.72 : 2,903.14 = 1,219.74 : x
2. Step 2: Convert to fraction form
   2,103.72/2,903.14 = 1,219.74/x
3. Step 3: Cross multiply
   2,103.72x = 2,903.14 × 1,219.74
4. Step 4: Simplify right side
   2,103.72x = 3,541,075.98
5. Step 5: Solve for x
   x = 3,541,075.98/2,103.72
6. Step 6: Final answer
   x = 1,683.24