Finding the Fourth Proportional to 1,402.87, 1,936.86 and 1,255.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.87 : 1,936.86 = 1,255.25 : x
2. Step 2: Convert to fraction form
   1,402.87/1,936.86 = 1,255.25/x
3. Step 3: Cross multiply
   1,402.87x = 1,936.86 × 1,255.25
4. Step 4: Simplify right side
   1,402.87x = 2,431,239.82
5. Step 5: Solve for x
   x = 2,431,239.82/1,402.87
6. Step 6: Final answer
   x = 1,733.05