Finding the Fourth Proportional to 1,863.30, 2,793.69 and 890.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863.30 : 2,793.69 = 890.22 : x
2. Step 2: Convert to fraction form
   1,863.30/2,793.69 = 890.22/x
3. Step 3: Cross multiply
   1,863.30x = 2,793.69 × 890.22
4. Step 4: Simplify right side
   1,863.30x = 2,486,998.71
5. Step 5: Solve for x
   x = 2,486,998.71/1,863.30
6. Step 6: Final answer
   x = 1,334.73