Finding the Fourth Proportional to 2,380.10, 3,284.21 and 1,317.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.10 : 3,284.21 = 1,317.71 : x
2. Step 2: Convert to fraction form
   2,380.10/3,284.21 = 1,317.71/x
3. Step 3: Cross multiply
   2,380.10x = 3,284.21 × 1,317.71
4. Step 4: Simplify right side
   2,380.10x = 4,327,613.35
5. Step 5: Solve for x
   x = 4,327,613.35/2,380.10
6. Step 6: Final answer
   x = 1,818.25