Finding the Fourth Proportional to 2,610.23, 3,911.67 and 1,440.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.23 : 3,911.67 = 1,440.78 : x
2. Step 2: Convert to fraction form
   2,610.23/3,911.67 = 1,440.78/x
3. Step 3: Cross multiply
   2,610.23x = 3,911.67 × 1,440.78
4. Step 4: Simplify right side
   2,610.23x = 5,635,841.23
5. Step 5: Solve for x
   x = 5,635,841.23/2,610.23
6. Step 6: Final answer
   x = 2,159.14