Finding the Fourth Proportional to 3,164.04, 4,747.31 and 1,215.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,164.04 : 4,747.31 = 1,215.72 : x
2. Step 2: Convert to fraction form
   3,164.04/4,747.31 = 1,215.72/x
3. Step 3: Cross multiply
   3,164.04x = 4,747.31 × 1,215.72
4. Step 4: Simplify right side
   3,164.04x = 5,771,379.02
5. Step 5: Solve for x
   x = 5,771,379.02/3,164.04
6. Step 6: Final answer
   x = 1,824.06