Finding the Fourth Proportional to 1,181.49, 1,628.42 and 886.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.49 : 1,628.42 = 886.25 : x
2. Step 2: Convert to fraction form
   1,181.49/1,628.42 = 886.25/x
3. Step 3: Cross multiply
   1,181.49x = 1,628.42 × 886.25
4. Step 4: Simplify right side
   1,181.49x = 1,443,174.65
5. Step 5: Solve for x
   x = 1,443,174.65/1,181.49
6. Step 6: Final answer
   x = 1,221.49