Finding the Fourth Proportional to 1,498.17, 2,067.74 and 939.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.17 : 2,067.74 = 939.12 : x
2. Step 2: Convert to fraction form
   1,498.17/2,067.74 = 939.12/x
3. Step 3: Cross multiply
   1,498.17x = 2,067.74 × 939.12
4. Step 4: Simplify right side
   1,498.17x = 1,941,858.16
5. Step 5: Solve for x
   x = 1,941,858.16/1,498.17
6. Step 6: Final answer
   x = 1,296.15