Finding the Fourth Proportional to 3,189.32, 4,782.81 and 1,108.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,189.32 : 4,782.81 = 1,108.76 : x
2. Step 2: Convert to fraction form
   3,189.32/4,782.81 = 1,108.76/x
3. Step 3: Cross multiply
   3,189.32x = 4,782.81 × 1,108.76
4. Step 4: Simplify right side
   3,189.32x = 5,302,988.42
5. Step 5: Solve for x
   x = 5,302,988.42/3,189.32
6. Step 6: Final answer
   x = 1,662.74