Finding the Fourth Proportional to 1,949.59, 2,922.61 and 853.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,949.59 : 2,922.61 = 853.56 : x
2. Step 2: Convert to fraction form
   1,949.59/2,922.61 = 853.56/x
3. Step 3: Cross multiply
   1,949.59x = 2,922.61 × 853.56
4. Step 4: Simplify right side
   1,949.59x = 2,494,615.69
5. Step 5: Solve for x
   x = 2,494,615.69/1,949.59
6. Step 6: Final answer
   x = 1,279.56