Finding the Fourth Proportional to 1,645.76, 2,268.79 and 1,362.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.76 : 2,268.79 = 1,362.35 : x
2. Step 2: Convert to fraction form
   1,645.76/2,268.79 = 1,362.35/x
3. Step 3: Cross multiply
   1,645.76x = 2,268.79 × 1,362.35
4. Step 4: Simplify right side
   1,645.76x = 3,090,871.31
5. Step 5: Solve for x
   x = 3,090,871.31/1,645.76
6. Step 6: Final answer
   x = 1,878.09