Finding the Fourth Proportional to 1,139.06, 1,708.59 and 273.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.06 : 1,708.59 = 273.38 : x
2. Step 2: Convert to fraction form
   1,139.06/1,708.59 = 273.38/x
3. Step 3: Cross multiply
   1,139.06x = 1,708.59 × 273.38
4. Step 4: Simplify right side
   1,139.06x = 467,086.82
5. Step 5: Solve for x
   x = 467,086.82/1,139.06
6. Step 6: Final answer
   x = 410.06