Finding the Fourth Proportional to 2,485.56, 3,724.98 and 945.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.56 : 3,724.98 = 945.72 : x
2. Step 2: Convert to fraction form
   2,485.56/3,724.98 = 945.72/x
3. Step 3: Cross multiply
   2,485.56x = 3,724.98 × 945.72
4. Step 4: Simplify right side
   2,485.56x = 3,522,788.09
5. Step 5: Solve for x
   x = 3,522,788.09/2,485.56
6. Step 6: Final answer
   x = 1,417.30