Finding the Fourth Proportional to 1,996.88, 2,756.34 and 1,200.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.88 : 2,756.34 = 1,200.68 : x
2. Step 2: Convert to fraction form
   1,996.88/2,756.34 = 1,200.68/x
3. Step 3: Cross multiply
   1,996.88x = 2,756.34 × 1,200.68
4. Step 4: Simplify right side
   1,996.88x = 3,309,482.31
5. Step 5: Solve for x
   x = 3,309,482.31/1,996.88
6. Step 6: Final answer
   x = 1,657.33