Finding the Fourth Proportional to 2,062.72, 3,095.55 and 830.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,062.72 : 3,095.55 = 830.47 : x
2. Step 2: Convert to fraction form
   2,062.72/3,095.55 = 830.47/x
3. Step 3: Cross multiply
   2,062.72x = 3,095.55 × 830.47
4. Step 4: Simplify right side
   2,062.72x = 2,570,761.41
5. Step 5: Solve for x
   x = 2,570,761.41/2,062.72
6. Step 6: Final answer
   x = 1,246.30