Finding the Fourth Proportional to 1,426.28, 2,140.64 and 1,016.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.28 : 2,140.64 = 1,016.42 : x
2. Step 2: Convert to fraction form
   1,426.28/2,140.64 = 1,016.42/x
3. Step 3: Cross multiply
   1,426.28x = 2,140.64 × 1,016.42
4. Step 4: Simplify right side
   1,426.28x = 2,175,789.31
5. Step 5: Solve for x
   x = 2,175,789.31/1,426.28
6. Step 6: Final answer
   x = 1,525.50