Finding the Fourth Proportional to 1,997.16, 2,755.82 and 1,157.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.16 : 2,755.82 = 1,157.22 : x
2. Step 2: Convert to fraction form
   1,997.16/2,755.82 = 1,157.22/x
3. Step 3: Cross multiply
   1,997.16x = 2,755.82 × 1,157.22
4. Step 4: Simplify right side
   1,997.16x = 3,189,092.91
5. Step 5: Solve for x
   x = 3,189,092.91/1,997.16
6. Step 6: Final answer
   x = 1,596.82