Finding the Fourth Proportional to 1,679.46, 2,317.52 and 971.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.46 : 2,317.52 = 971.52 : x
2. Step 2: Convert to fraction form
   1,679.46/2,317.52 = 971.52/x
3. Step 3: Cross multiply
   1,679.46x = 2,317.52 × 971.52
4. Step 4: Simplify right side
   1,679.46x = 2,251,517.03
5. Step 5: Solve for x
   x = 2,251,517.03/1,679.46
6. Step 6: Final answer
   x = 1,340.62