Finding the Fourth Proportional to 2,255.99, 3,113.25 and 1,261.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.99 : 3,113.25 = 1,261.25 : x
2. Step 2: Convert to fraction form
   2,255.99/3,113.25 = 1,261.25/x
3. Step 3: Cross multiply
   2,255.99x = 3,113.25 × 1,261.25
4. Step 4: Simplify right side
   2,255.99x = 3,926,586.56
5. Step 5: Solve for x
   x = 3,926,586.56/2,255.99
6. Step 6: Final answer
   x = 1,740.52