Finding the Fourth Proportional to 2,869.50, 4,303.83 and 921.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,869.50 : 4,303.83 = 921.45 : x
2. Step 2: Convert to fraction form
   2,869.50/4,303.83 = 921.45/x
3. Step 3: Cross multiply
   2,869.50x = 4,303.83 × 921.45
4. Step 4: Simplify right side
   2,869.50x = 3,965,764.15
5. Step 5: Solve for x
   x = 3,965,764.15/2,869.50
6. Step 6: Final answer
   x = 1,382.04