Finding the Fourth Proportional to 2,860.72, 4,293 and 1,011.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,860.72 : 4,293 = 1,011.83 : x
2. Step 2: Convert to fraction form
   2,860.72/4,293 = 1,011.83/x
3. Step 3: Cross multiply
   2,860.72x = 4,293 × 1,011.83
4. Step 4: Simplify right side
   2,860.72x = 4,343,764.73
5. Step 5: Solve for x
   x = 4,343,764.73/2,860.72
6. Step 6: Final answer
   x = 1,518.42