Finding the Fourth Proportional to 2,431.08, 3,647.16 and 1,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.08 : 3,647.16 = 1,260.72 : x
2. Step 2: Convert to fraction form
   2,431.08/3,647.16 = 1,260.72/x
3. Step 3: Cross multiply
   2,431.08x = 3,647.16 × 1,260.72
4. Step 4: Simplify right side
   2,431.08x = 4,598,047.56
5. Step 5: Solve for x
   x = 4,598,047.56/2,431.08
6. Step 6: Final answer
   x = 1,891.36