Finding the Fourth Proportional to 1,677.78, 2,514.38 and 1,304.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.78 : 2,514.38 = 1,304.78 : x
2. Step 2: Convert to fraction form
   1,677.78/2,514.38 = 1,304.78/x
3. Step 3: Cross multiply
   1,677.78x = 2,514.38 × 1,304.78
4. Step 4: Simplify right side
   1,677.78x = 3,280,693.64
5. Step 5: Solve for x
   x = 3,280,693.64/1,677.78
6. Step 6: Final answer
   x = 1,955.38