Finding the Fourth Proportional to 1,645.37, 2,468.69 and 768.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.37 : 2,468.69 = 768.27 : x
2. Step 2: Convert to fraction form
   1,645.37/2,468.69 = 768.27/x
3. Step 3: Cross multiply
   1,645.37x = 2,468.69 × 768.27
4. Step 4: Simplify right side
   1,645.37x = 1,896,620.47
5. Step 5: Solve for x
   x = 1,896,620.47/1,645.37
6. Step 6: Final answer
   x = 1,152.70