Finding the Fourth Proportional to 2,260.79, 3,119.90 and 1,317.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,260.79 : 3,119.90 = 1,317.23 : x
2. Step 2: Convert to fraction form
   2,260.79/3,119.90 = 1,317.23/x
3. Step 3: Cross multiply
   2,260.79x = 3,119.90 × 1,317.23
4. Step 4: Simplify right side
   2,260.79x = 4,109,609.71
5. Step 5: Solve for x
   x = 4,109,609.71/2,260.79
6. Step 6: Final answer
   x = 1,817.78