Finding the Fourth Proportional to 2,865.73, 4,297.23 and 1,111.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,865.73 : 4,297.23 = 1,111.55 : x
2. Step 2: Convert to fraction form
   2,865.73/4,297.23 = 1,111.55/x
3. Step 3: Cross multiply
   2,865.73x = 4,297.23 × 1,111.55
4. Step 4: Simplify right side
   2,865.73x = 4,776,586.01
5. Step 5: Solve for x
   x = 4,776,586.01/2,865.73
6. Step 6: Final answer
   x = 1,666.80