Finding the Fourth Proportional to 1,770.42, 2,443.16 and 984.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.42 : 2,443.16 = 984.47 : x
2. Step 2: Convert to fraction form
   1,770.42/2,443.16 = 984.47/x
3. Step 3: Cross multiply
   1,770.42x = 2,443.16 × 984.47
4. Step 4: Simplify right side
   1,770.42x = 2,405,226.29
5. Step 5: Solve for x
   x = 2,405,226.29/1,770.42
6. Step 6: Final answer
   x = 1,358.56