Finding the Fourth Proportional to 2,868.64, 4,303.59 and 920.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.64 : 4,303.59 = 920.83 : x
2. Step 2: Convert to fraction form
   2,868.64/4,303.59 = 920.83/x
3. Step 3: Cross multiply
   2,868.64x = 4,303.59 × 920.83
4. Step 4: Simplify right side
   2,868.64x = 3,962,874.78
5. Step 5: Solve for x
   x = 3,962,874.78/2,868.64
6. Step 6: Final answer
   x = 1,381.45