Finding the Fourth Proportional to 2,866.72, 4,300.02 and 918.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.72 : 4,300.02 = 918.76 : x
2. Step 2: Convert to fraction form
   2,866.72/4,300.02 = 918.76/x
3. Step 3: Cross multiply
   2,866.72x = 4,300.02 × 918.76
4. Step 4: Simplify right side
   2,866.72x = 3,950,686.38
5. Step 5: Solve for x
   x = 3,950,686.38/2,866.72
6. Step 6: Final answer
   x = 1,378.12