Finding the Fourth Proportional to 1,181.76, 1,630.98 and 684.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.76 : 1,630.98 = 684.42 : x
2. Step 2: Convert to fraction form
   1,181.76/1,630.98 = 684.42/x
3. Step 3: Cross multiply
   1,181.76x = 1,630.98 × 684.42
4. Step 4: Simplify right side
   1,181.76x = 1,116,275.33
5. Step 5: Solve for x
   x = 1,116,275.33/1,181.76
6. Step 6: Final answer
   x = 944.59