Finding the Fourth Proportional to 1,112.56, 1,668.72 and 382.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.56 : 1,668.72 = 382.03 : x
2. Step 2: Convert to fraction form
   1,112.56/1,668.72 = 382.03/x
3. Step 3: Cross multiply
   1,112.56x = 1,668.72 × 382.03
4. Step 4: Simplify right side
   1,112.56x = 637,501.10
5. Step 5: Solve for x
   x = 637,501.10/1,112.56
6. Step 6: Final answer
   x = 573.00