Finding the Fourth Proportional to 1,181.99, 1,630.98 and 684.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.99 : 1,630.98 = 684.65 : x
2. Step 2: Convert to fraction form
   1,181.99/1,630.98 = 684.65/x
3. Step 3: Cross multiply
   1,181.99x = 1,630.98 × 684.65
4. Step 4: Simplify right side
   1,181.99x = 1,116,642.30
5. Step 5: Solve for x
   x = 1,116,642.30/1,181.99
6. Step 6: Final answer
   x = 944.72