Finding the Fourth Proportional to 1,181.73, 1,630.71 and 684.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.73 : 1,630.71 = 684.39 : x
2. Step 2: Convert to fraction form
   1,181.73/1,630.71 = 684.39/x
3. Step 3: Cross multiply
   1,181.73x = 1,630.71 × 684.39
4. Step 4: Simplify right side
   1,181.73x = 1,116,041.62
5. Step 5: Solve for x
   x = 1,116,041.62/1,181.73
6. Step 6: Final answer
   x = 944.41