Finding the Fourth Proportional to 2,945.72, 4,419.41 and 998.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.72 : 4,419.41 = 998.07 : x
2. Step 2: Convert to fraction form
   2,945.72/4,419.41 = 998.07/x
3. Step 3: Cross multiply
   2,945.72x = 4,419.41 × 998.07
4. Step 4: Simplify right side
   2,945.72x = 4,410,875.55
5. Step 5: Solve for x
   x = 4,410,875.55/2,945.72
6. Step 6: Final answer
   x = 1,497.39