Finding the Fourth Proportional to 1,166.22, 1,748.78 and 679.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,166.22 : 1,748.78 = 679.42 : x
2. Step 2: Convert to fraction form
   1,166.22/1,748.78 = 679.42/x
3. Step 3: Cross multiply
   1,166.22x = 1,748.78 × 679.42
4. Step 4: Simplify right side
   1,166.22x = 1,188,156.11
5. Step 5: Solve for x
   x = 1,188,156.11/1,166.22
6. Step 6: Final answer
   x = 1,018.81