Finding the Fourth Proportional to 1,679.68, 2,514.25 and 1,061.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.68 : 2,514.25 = 1,061.25 : x
2. Step 2: Convert to fraction form
   1,679.68/2,514.25 = 1,061.25/x
3. Step 3: Cross multiply
   1,679.68x = 2,514.25 × 1,061.25
4. Step 4: Simplify right side
   1,679.68x = 2,668,247.81
5. Step 5: Solve for x
   x = 2,668,247.81/1,679.68
6. Step 6: Final answer
   x = 1,588.55