Finding the Fourth Proportional to 2,013.31, 3,019.83 and 696.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.31 : 3,019.83 = 696.79 : x
2. Step 2: Convert to fraction form
   2,013.31/3,019.83 = 696.79/x
3. Step 3: Cross multiply
   2,013.31x = 3,019.83 × 696.79
4. Step 4: Simplify right side
   2,013.31x = 2,104,187.35
5. Step 5: Solve for x
   x = 2,104,187.35/2,013.31
6. Step 6: Final answer
   x = 1,045.14