Finding the Fourth Proportional to 2,298.72, 3,172.26 and 1,250.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.72 : 3,172.26 = 1,250.78 : x
2. Step 2: Convert to fraction form
   2,298.72/3,172.26 = 1,250.78/x
3. Step 3: Cross multiply
   2,298.72x = 3,172.26 × 1,250.78
4. Step 4: Simplify right side
   2,298.72x = 3,967,799.36
5. Step 5: Solve for x
   x = 3,967,799.36/2,298.72
6. Step 6: Final answer
   x = 1,726.09