Finding the Fourth Proportional to 1,770.84, 2,443.86 and 984.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.84 : 2,443.86 = 984.95 : x
2. Step 2: Convert to fraction form
   1,770.84/2,443.86 = 984.95/x
3. Step 3: Cross multiply
   1,770.84x = 2,443.86 × 984.95
4. Step 4: Simplify right side
   1,770.84x = 2,407,067.69
5. Step 5: Solve for x
   x = 2,407,067.69/1,770.84
6. Step 6: Final answer
   x = 1,359.28