Finding the Fourth Proportional to 1,166.70, 1,610.18 and 694.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,166.70 : 1,610.18 = 694.72 : x
2. Step 2: Convert to fraction form
   1,166.70/1,610.18 = 694.72/x
3. Step 3: Cross multiply
   1,166.70x = 1,610.18 × 694.72
4. Step 4: Simplify right side
   1,166.70x = 1,118,624.25
5. Step 5: Solve for x
   x = 1,118,624.25/1,166.70
6. Step 6: Final answer
   x = 958.79