Finding the Fourth Proportional to 2,103.91, 2,903.29 and 1,219.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.91 : 2,903.29 = 1,219.99 : x
2. Step 2: Convert to fraction form
   2,103.91/2,903.29 = 1,219.99/x
3. Step 3: Cross multiply
   2,103.91x = 2,903.29 × 1,219.99
4. Step 4: Simplify right side
   2,103.91x = 3,541,984.77
5. Step 5: Solve for x
   x = 3,541,984.77/2,103.91
6. Step 6: Final answer
   x = 1,683.52