Finding the Fourth Proportional to 2,317.55, 3,197.92 and 1,421.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.55 : 3,197.92 = 1,421.69 : x
2. Step 2: Convert to fraction form
   2,317.55/3,197.92 = 1,421.69/x
3. Step 3: Cross multiply
   2,317.55x = 3,197.92 × 1,421.69
4. Step 4: Simplify right side
   2,317.55x = 4,546,443.78
5. Step 5: Solve for x
   x = 4,546,443.78/2,317.55
6. Step 6: Final answer
   x = 1,961.75