Finding the Fourth Proportional to 1,665.97, 2,499.86 and 1,254.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.97 : 2,499.86 = 1,254.69 : x
2. Step 2: Convert to fraction form
   1,665.97/2,499.86 = 1,254.69/x
3. Step 3: Cross multiply
   1,665.97x = 2,499.86 × 1,254.69
4. Step 4: Simplify right side
   1,665.97x = 3,136,552.48
5. Step 5: Solve for x
   x = 3,136,552.48/1,665.97
6. Step 6: Final answer
   x = 1,882.72