Finding the Fourth Proportional to 1,185.52, 1,631.32 and 889.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.52 : 1,631.32 = 889.84 : x
2. Step 2: Convert to fraction form
   1,185.52/1,631.32 = 889.84/x
3. Step 3: Cross multiply
   1,185.52x = 1,631.32 × 889.84
4. Step 4: Simplify right side
   1,185.52x = 1,451,613.79
5. Step 5: Solve for x
   x = 1,451,613.79/1,185.52
6. Step 6: Final answer
   x = 1,224.45