Finding the Fourth Proportional to 1,499.18, 2,068.81 and 939.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.18 : 2,068.81 = 939.95 : x
2. Step 2: Convert to fraction form
   1,499.18/2,068.81 = 939.95/x
3. Step 3: Cross multiply
   1,499.18x = 2,068.81 × 939.95
4. Step 4: Simplify right side
   1,499.18x = 1,944,567.62
5. Step 5: Solve for x
   x = 1,944,567.62/1,499.18
6. Step 6: Final answer
   x = 1,297.09