Finding the Fourth Proportional to 1,971.16, 2,958.56 and 997.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,971.16 : 2,958.56 = 997.94 : x
2. Step 2: Convert to fraction form
   1,971.16/2,958.56 = 997.94/x
3. Step 3: Cross multiply
   1,971.16x = 2,958.56 × 997.94
4. Step 4: Simplify right side
   1,971.16x = 2,952,465.37
5. Step 5: Solve for x
   x = 2,952,465.37/1,971.16
6. Step 6: Final answer
   x = 1,497.83