Finding the Fourth Proportional to 1,740.78, 2,401.67 and 994.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,740.78 : 2,401.67 = 994.23 : x
2. Step 2: Convert to fraction form
   1,740.78/2,401.67 = 994.23/x
3. Step 3: Cross multiply
   1,740.78x = 2,401.67 × 994.23
4. Step 4: Simplify right side
   1,740.78x = 2,387,807.39
5. Step 5: Solve for x
   x = 2,387,807.39/1,740.78
6. Step 6: Final answer
   x = 1,371.69