Finding the Fourth Proportional to 2,293.89, 3,165.57 and 1,245.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,293.89 : 3,165.57 = 1,245.96 : x
2. Step 2: Convert to fraction form
   2,293.89/3,165.57 = 1,245.96/x
3. Step 3: Cross multiply
   2,293.89x = 3,165.57 × 1,245.96
4. Step 4: Simplify right side
   2,293.89x = 3,944,173.60
5. Step 5: Solve for x
   x = 3,944,173.60/2,293.89
6. Step 6: Final answer
   x = 1,719.43