Finding the Fourth Proportional to 3,164.72, 4,747.20 and 1,190.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,164.72 : 4,747.20 = 1,190.15 : x
2. Step 2: Convert to fraction form
   3,164.72/4,747.20 = 1,190.15/x
3. Step 3: Cross multiply
   3,164.72x = 4,747.20 × 1,190.15
4. Step 4: Simplify right side
   3,164.72x = 5,649,856.34
5. Step 5: Solve for x
   x = 5,649,856.34/3,164.72
6. Step 6: Final answer
   x = 1,785.27