Finding the Fourth Proportional to 2,099.94, 3,150.05 and 712.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.94 : 3,150.05 = 712.89 : x
2. Step 2: Convert to fraction form
   2,099.94/3,150.05 = 712.89/x
3. Step 3: Cross multiply
   2,099.94x = 3,150.05 × 712.89
4. Step 4: Simplify right side
   2,099.94x = 2,245,635.58
5. Step 5: Solve for x
   x = 2,245,635.58/2,099.94
6. Step 6: Final answer
   x = 1,069.38