Finding the Fourth Proportional to 1,426.32, 2,140.56 and 1,042.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.32 : 2,140.56 = 1,042.56 : x
2. Step 2: Convert to fraction form
   1,426.32/2,140.56 = 1,042.56/x
3. Step 3: Cross multiply
   1,426.32x = 2,140.56 × 1,042.56
4. Step 4: Simplify right side
   1,426.32x = 2,231,662.23
5. Step 5: Solve for x
   x = 2,231,662.23/1,426.32
6. Step 6: Final answer
   x = 1,564.63