Finding the Fourth Proportional to 2,704.39, 4,056.83 and 830.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,704.39 : 4,056.83 = 830.71 : x
2. Step 2: Convert to fraction form
   2,704.39/4,056.83 = 830.71/x
3. Step 3: Cross multiply
   2,704.39x = 4,056.83 × 830.71
4. Step 4: Simplify right side
   2,704.39x = 3,370,035.14
5. Step 5: Solve for x
   x = 3,370,035.14/2,704.39
6. Step 6: Final answer
   x = 1,246.14