Finding the Fourth Proportional to 2,179.90, 3,269.49 and 1,009.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.90 : 3,269.49 = 1,009.86 : x
2. Step 2: Convert to fraction form
   2,179.90/3,269.49 = 1,009.86/x
3. Step 3: Cross multiply
   2,179.90x = 3,269.49 × 1,009.86
4. Step 4: Simplify right side
   2,179.90x = 3,301,710.82
5. Step 5: Solve for x
   x = 3,301,710.82/2,179.90
6. Step 6: Final answer
   x = 1,514.62