Finding the Fourth Proportional to 1,498.11, 2,068.40 and 938.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.11 : 2,068.40 = 938.79 : x
2. Step 2: Convert to fraction form
   1,498.11/2,068.40 = 938.79/x
3. Step 3: Cross multiply
   1,498.11x = 2,068.40 × 938.79
4. Step 4: Simplify right side
   1,498.11x = 1,941,788.54
5. Step 5: Solve for x
   x = 1,941,788.54/1,498.11
6. Step 6: Final answer
   x = 1,296.16