Finding the Fourth Proportional to 1,342.75, 1,851.43 and 1,259.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.75 : 1,851.43 = 1,259.72 : x
2. Step 2: Convert to fraction form
   1,342.75/1,851.43 = 1,259.72/x
3. Step 3: Cross multiply
   1,342.75x = 1,851.43 × 1,259.72
4. Step 4: Simplify right side
   1,342.75x = 2,332,283.40
5. Step 5: Solve for x
   x = 2,332,283.40/1,342.75
6. Step 6: Final answer
   x = 1,736.95