Finding the Fourth Proportional to 2,654.49, 3,980.39 and 1,009.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.49 : 3,980.39 = 1,009.79 : x
2. Step 2: Convert to fraction form
   2,654.49/3,980.39 = 1,009.79/x
3. Step 3: Cross multiply
   2,654.49x = 3,980.39 × 1,009.79
4. Step 4: Simplify right side
   2,654.49x = 4,019,333.07
5. Step 5: Solve for x
   x = 4,019,333.07/2,654.49
6. Step 6: Final answer
   x = 1,514.16