Finding the Fourth Proportional to 2,599.40, 3,896.78 and 955.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.40 : 3,896.78 = 955.56 : x
2. Step 2: Convert to fraction form
   2,599.40/3,896.78 = 955.56/x
3. Step 3: Cross multiply
   2,599.40x = 3,896.78 × 955.56
4. Step 4: Simplify right side
   2,599.40x = 3,723,587.61
5. Step 5: Solve for x
   x = 3,723,587.61/2,599.40
6. Step 6: Final answer
   x = 1,432.48