Finding the Fourth Proportional to 1,740.45, 2,399.94 and 1,242.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,740.45 : 2,399.94 = 1,242.89 : x
2. Step 2: Convert to fraction form
   1,740.45/2,399.94 = 1,242.89/x
3. Step 3: Cross multiply
   1,740.45x = 2,399.94 × 1,242.89
4. Step 4: Simplify right side
   1,740.45x = 2,982,849.43
5. Step 5: Solve for x
   x = 2,982,849.43/1,740.45
6. Step 6: Final answer
   x = 1,713.84