Finding the Fourth Proportional to 1,426.13, 1,963.49 and 1,242.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.13 : 1,963.49 = 1,242.05 : x
2. Step 2: Convert to fraction form
   1,426.13/1,963.49 = 1,242.05/x
3. Step 3: Cross multiply
   1,426.13x = 1,963.49 × 1,242.05
4. Step 4: Simplify right side
   1,426.13x = 2,438,746.54
5. Step 5: Solve for x
   x = 2,438,746.54/1,426.13
6. Step 6: Final answer
   x = 1,710.05