Finding the Fourth Proportional to 2,866.32, 4,300.02 and 918.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.32 : 4,300.02 = 918.72 : x
2. Step 2: Convert to fraction form
   2,866.32/4,300.02 = 918.72/x
3. Step 3: Cross multiply
   2,866.32x = 4,300.02 × 918.72
4. Step 4: Simplify right side
   2,866.32x = 3,950,514.37
5. Step 5: Solve for x
   x = 3,950,514.37/2,866.32
6. Step 6: Final answer
   x = 1,378.25