Finding the Fourth Proportional to 2,728.78, 4,090.12 and 1,168.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728.78 : 4,090.12 = 1,168.00 : x
2. Step 2: Convert to fraction form
   2,728.78/4,090.12 = 1,168.00/x
3. Step 3: Cross multiply
   2,728.78x = 4,090.12 × 1,168.00
4. Step 4: Simplify right side
   2,728.78x = 4,777,247.01
5. Step 5: Solve for x
   x = 4,777,247.01/2,728.78
6. Step 6: Final answer
   x = 1,750.69