Finding the Fourth Proportional to 2,868.72, 4,303.62 and 1,138.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.72 : 4,303.62 = 1,138.56 : x
2. Step 2: Convert to fraction form
   2,868.72/4,303.62 = 1,138.56/x
3. Step 3: Cross multiply
   2,868.72x = 4,303.62 × 1,138.56
4. Step 4: Simplify right side
   2,868.72x = 4,899,929.59
5. Step 5: Solve for x
   x = 4,899,929.59/2,868.72
6. Step 6: Final answer
   x = 1,708.05