Finding the Fourth Proportional to 1,426.11, 2,138.82 and 963.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.11 : 2,138.82 = 963.76 : x
2. Step 2: Convert to fraction form
   1,426.11/2,138.82 = 963.76/x
3. Step 3: Cross multiply
   1,426.11x = 2,138.82 × 963.76
4. Step 4: Simplify right side
   1,426.11x = 2,061,308.58
5. Step 5: Solve for x
   x = 2,061,308.58/1,426.11
6. Step 6: Final answer
   x = 1,445.41