Finding the Fourth Proportional to 1,320.69, 1,816.59 and 1,168.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.69 : 1,816.59 = 1,168.41 : x
2. Step 2: Convert to fraction form
   1,320.69/1,816.59 = 1,168.41/x
3. Step 3: Cross multiply
   1,320.69x = 1,816.59 × 1,168.41
4. Step 4: Simplify right side
   1,320.69x = 2,122,521.92
5. Step 5: Solve for x
   x = 2,122,521.92/1,320.69
6. Step 6: Final answer
   x = 1,607.13