Finding the Fourth Proportional to 2,874.24, 4,311.59 and 926.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.24 : 4,311.59 = 926.51 : x
2. Step 2: Convert to fraction form
   2,874.24/4,311.59 = 926.51/x
3. Step 3: Cross multiply
   2,874.24x = 4,311.59 × 926.51
4. Step 4: Simplify right side
   2,874.24x = 3,994,705.06
5. Step 5: Solve for x
   x = 3,994,705.06/2,874.24
6. Step 6: Final answer
   x = 1,389.83