Finding the Fourth Proportional to 1,770.25, 2,442.83 and 984.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.25 : 2,442.83 = 984.31 : x
2. Step 2: Convert to fraction form
   1,770.25/2,442.83 = 984.31/x
3. Step 3: Cross multiply
   1,770.25x = 2,442.83 × 984.31
4. Step 4: Simplify right side
   1,770.25x = 2,404,484.86
5. Step 5: Solve for x
   x = 2,404,484.86/1,770.25
6. Step 6: Final answer
   x = 1,358.28