Finding the Fourth Proportional to 2,686.86, 4,030.56 and 739.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.86 : 4,030.56 = 739.08 : x
2. Step 2: Convert to fraction form
   2,686.86/4,030.56 = 739.08/x
3. Step 3: Cross multiply
   2,686.86x = 4,030.56 × 739.08
4. Step 4: Simplify right side
   2,686.86x = 2,978,906.28
5. Step 5: Solve for x
   x = 2,978,906.28/2,686.86
6. Step 6: Final answer
   x = 1,108.69