Finding the Fourth Proportional to 2,865.88, 4,297.90 and 1,110.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,865.88 : 4,297.90 = 1,110.72 : x
2. Step 2: Convert to fraction form
   2,865.88/4,297.90 = 1,110.72/x
3. Step 3: Cross multiply
   2,865.88x = 4,297.90 × 1,110.72
4. Step 4: Simplify right side
   2,865.88x = 4,773,763.49
5. Step 5: Solve for x
   x = 4,773,763.49/2,865.88
6. Step 6: Final answer
   x = 1,665.72