Finding the Fourth Proportional to 1,770.72, 2,443.42 and 984.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.72 : 2,443.42 = 984.72 : x
2. Step 2: Convert to fraction form
   1,770.72/2,443.42 = 984.72/x
3. Step 3: Cross multiply
   1,770.72x = 2,443.42 × 984.72
4. Step 4: Simplify right side
   1,770.72x = 2,406,084.54
5. Step 5: Solve for x
   x = 2,406,084.54/1,770.72
6. Step 6: Final answer
   x = 1,358.82