Finding the Fourth Proportional to 1,664.00, 2,494.51 and 689.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.00 : 2,494.51 = 689.48 : x
2. Step 2: Convert to fraction form
   1,664.00/2,494.51 = 689.48/x
3. Step 3: Cross multiply
   1,664.00x = 2,494.51 × 689.48
4. Step 4: Simplify right side
   1,664.00x = 1,719,900.56
5. Step 5: Solve for x
   x = 1,719,900.56/1,664.00
6. Step 6: Final answer
   x = 1,033.60