Finding the Fourth Proportional to 1,141.56, 1,711.98 and 492.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.56 : 1,711.98 = 492.12 : x
2. Step 2: Convert to fraction form
   1,141.56/1,711.98 = 492.12/x
3. Step 3: Cross multiply
   1,141.56x = 1,711.98 × 492.12
4. Step 4: Simplify right side
   1,141.56x = 842,499.60
5. Step 5: Solve for x
   x = 842,499.60/1,141.56
6. Step 6: Final answer
   x = 738.02