Finding the Fourth Proportional to 1,406.88, 1,942.38 and 1,259.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.88 : 1,942.38 = 1,259.25 : x
2. Step 2: Convert to fraction form
   1,406.88/1,942.38 = 1,259.25/x
3. Step 3: Cross multiply
   1,406.88x = 1,942.38 × 1,259.25
4. Step 4: Simplify right side
   1,406.88x = 2,445,942.02
5. Step 5: Solve for x
   x = 2,445,942.02/1,406.88
6. Step 6: Final answer
   x = 1,738.56