Finding the Fourth Proportional to 1,756.73, 2,417.94 and 1,231.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,756.73 : 2,417.94 = 1,231.85 : x
2. Step 2: Convert to fraction form
   1,756.73/2,417.94 = 1,231.85/x
3. Step 3: Cross multiply
   1,756.73x = 2,417.94 × 1,231.85
4. Step 4: Simplify right side
   1,756.73x = 2,978,527.30
5. Step 5: Solve for x
   x = 2,978,527.30/1,756.73
6. Step 6: Final answer
   x = 1,695.50