Finding the Fourth Proportional to 2,707.42, 4,061.03 and 858.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,707.42 : 4,061.03 = 858.73 : x
2. Step 2: Convert to fraction form
   2,707.42/4,061.03 = 858.73/x
3. Step 3: Cross multiply
   2,707.42x = 4,061.03 × 858.73
4. Step 4: Simplify right side
   2,707.42x = 3,487,328.29
5. Step 5: Solve for x
   x = 3,487,328.29/2,707.42
6. Step 6: Final answer
   x = 1,288.06