Finding the Fourth Proportional to 1,738.25, 2,398.78 and 992.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,738.25 : 2,398.78 = 992.17 : x
2. Step 2: Convert to fraction form
   1,738.25/2,398.78 = 992.17/x
3. Step 3: Cross multiply
   1,738.25x = 2,398.78 × 992.17
4. Step 4: Simplify right side
   1,738.25x = 2,379,997.55
5. Step 5: Solve for x
   x = 2,379,997.55/1,738.25
6. Step 6: Final answer
   x = 1,369.19