Finding the Fourth Proportional to 2,636.48, 3,951.86 and 1,173.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.48 : 3,951.86 = 1,173.62 : x
2. Step 2: Convert to fraction form
   2,636.48/3,951.86 = 1,173.62/x
3. Step 3: Cross multiply
   2,636.48x = 3,951.86 × 1,173.62
4. Step 4: Simplify right side
   2,636.48x = 4,637,981.93
5. Step 5: Solve for x
   x = 4,637,981.93/2,636.48
6. Step 6: Final answer
   x = 1,759.16