Finding the Fourth Proportional to 1,669.66, 2,499.82 and 1,257.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.66 : 2,499.82 = 1,257.52 : x
2. Step 2: Convert to fraction form
   1,669.66/2,499.82 = 1,257.52/x
3. Step 3: Cross multiply
   1,669.66x = 2,499.82 × 1,257.52
4. Step 4: Simplify right side
   1,669.66x = 3,143,564.25
5. Step 5: Solve for x
   x = 3,143,564.25/1,669.66
6. Step 6: Final answer
   x = 1,882.76