Finding the Fourth Proportional to 1,498.22, 2,068.69 and 939.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.22 : 2,068.69 = 939.70 : x
2. Step 2: Convert to fraction form
   1,498.22/2,068.69 = 939.70/x
3. Step 3: Cross multiply
   1,498.22x = 2,068.69 × 939.70
4. Step 4: Simplify right side
   1,498.22x = 1,943,947.99
5. Step 5: Solve for x
   x = 1,943,947.99/1,498.22
6. Step 6: Final answer
   x = 1,297.51