Finding the Fourth Proportional to 2,945.16, 4,418.35 and 997.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.16 : 4,418.35 = 997.31 : x
2. Step 2: Convert to fraction form
   2,945.16/4,418.35 = 997.31/x
3. Step 3: Cross multiply
   2,945.16x = 4,418.35 × 997.31
4. Step 4: Simplify right side
   2,945.16x = 4,406,473.19
5. Step 5: Solve for x
   x = 4,406,473.19/2,945.16
6. Step 6: Final answer
   x = 1,496.17