Finding the Fourth Proportional to 2,633.40, 3,951.32 and 1,172.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,633.40 : 3,951.32 = 1,172.39 : x
2. Step 2: Convert to fraction form
   2,633.40/3,951.32 = 1,172.39/x
3. Step 3: Cross multiply
   2,633.40x = 3,951.32 × 1,172.39
4. Step 4: Simplify right side
   2,633.40x = 4,632,462.44
5. Step 5: Solve for x
   x = 4,632,462.44/2,633.40
6. Step 6: Final answer
   x = 1,759.12