Finding the Fourth Proportional to 2,579.37, 3,870.16 and 936.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.37 : 3,870.16 = 936.15 : x
2. Step 2: Convert to fraction form
   2,579.37/3,870.16 = 936.15/x
3. Step 3: Cross multiply
   2,579.37x = 3,870.16 × 936.15
4. Step 4: Simplify right side
   2,579.37x = 3,623,050.28
5. Step 5: Solve for x
   x = 3,623,050.28/2,579.37
6. Step 6: Final answer
   x = 1,404.63