Finding the Fourth Proportional to 2,639.42, 3,958.28 and 973.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.42 : 3,958.28 = 973.16 : x
2. Step 2: Convert to fraction form
   2,639.42/3,958.28 = 973.16/x
3. Step 3: Cross multiply
   2,639.42x = 3,958.28 × 973.16
4. Step 4: Simplify right side
   2,639.42x = 3,852,039.76
5. Step 5: Solve for x
   x = 3,852,039.76/2,639.42
6. Step 6: Final answer
   x = 1,459.43