Finding the Fourth Proportional to 4,139.72, 6,209.52 and 1,507.22

Step by Step Solution

1. Step 1: Write the proportion equation
   4,139.72 : 6,209.52 = 1,507.22 : x
2. Step 2: Convert to fraction form
   4,139.72/6,209.52 = 1,507.22/x
3. Step 3: Cross multiply
   4,139.72x = 6,209.52 × 1,507.22
4. Step 4: Simplify right side
   4,139.72x = 9,359,112.73
5. Step 5: Solve for x
   x = 9,359,112.73/4,139.72
6. Step 6: Final answer
   x = 2,260.81