Finding the Fourth Proportional to 2,317.40, 3,198.10 and 1,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.40 : 3,198.10 = 1,269.50 : x
2. Step 2: Convert to fraction form
   2,317.40/3,198.10 = 1,269.50/x
3. Step 3: Cross multiply
   2,317.40x = 3,198.10 × 1,269.50
4. Step 4: Simplify right side
   2,317.40x = 4,059,968.79
5. Step 5: Solve for x
   x = 4,059,968.79/2,317.40
6. Step 6: Final answer
   x = 1,751.95