Finding the Fourth Proportional to 2,104.01, 2,903.50 and 1,219.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.01 : 2,903.50 = 1,219.90 : x
2. Step 2: Convert to fraction form
   2,104.01/2,903.50 = 1,219.90/x
3. Step 3: Cross multiply
   2,104.01x = 2,903.50 × 1,219.90
4. Step 4: Simplify right side
   2,104.01x = 3,541,969.34
5. Step 5: Solve for x
   x = 3,541,969.34/2,104.01
6. Step 6: Final answer
   x = 1,683.44