Finding the Fourth Proportional to 1,208.48, 1,667.63 and 677.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.48 : 1,667.63 = 677.34 : x
2. Step 2: Convert to fraction form
   1,208.48/1,667.63 = 677.34/x
3. Step 3: Cross multiply
   1,208.48x = 1,667.63 × 677.34
4. Step 4: Simplify right side
   1,208.48x = 1,129,549.12
5. Step 5: Solve for x
   x = 1,129,549.12/1,208.48
6. Step 6: Final answer
   x = 934.69