Finding the Fourth Proportional to 2,103.19, 2,903.31 and 1,317.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.19 : 2,903.31 = 1,317.69 : x
2. Step 2: Convert to fraction form
   2,103.19/2,903.31 = 1,317.69/x
3. Step 3: Cross multiply
   2,103.19x = 2,903.31 × 1,317.69
4. Step 4: Simplify right side
   2,103.19x = 3,825,662.55
5. Step 5: Solve for x
   x = 3,825,662.55/2,103.19
6. Step 6: Final answer
   x = 1,818.98