Finding the Fourth Proportional to 1,996.12, 2,754.80 and 1,157.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.12 : 2,754.80 = 1,157.05 : x
2. Step 2: Convert to fraction form
   1,996.12/2,754.80 = 1,157.05/x
3. Step 3: Cross multiply
   1,996.12x = 2,754.80 × 1,157.05
4. Step 4: Simplify right side
   1,996.12x = 3,187,441.34
5. Step 5: Solve for x
   x = 3,187,441.34/1,996.12
6. Step 6: Final answer
   x = 1,596.82