Finding the Fourth Proportional to 1,112.89, 1,668.17 and 382.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.89 : 1,668.17 = 382.06 : x
2. Step 2: Convert to fraction form
   1,112.89/1,668.17 = 382.06/x
3. Step 3: Cross multiply
   1,112.89x = 1,668.17 × 382.06
4. Step 4: Simplify right side
   1,112.89x = 637,330.78
5. Step 5: Solve for x
   x = 637,330.78/1,112.89
6. Step 6: Final answer
   x = 572.68