Finding the Fourth Proportional to 1,362.80, 1,879.46 and 1,064.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.80 : 1,879.46 = 1,064.12 : x
2. Step 2: Convert to fraction form
   1,362.80/1,879.46 = 1,064.12/x
3. Step 3: Cross multiply
   1,362.80x = 1,879.46 × 1,064.12
4. Step 4: Simplify right side
   1,362.80x = 1,999,970.98
5. Step 5: Solve for x
   x = 1,999,970.98/1,362.80
6. Step 6: Final answer
   x = 1,467.55