Finding the Fourth Proportional to 2,057.58, 2,839.68 and 1,173.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.58 : 2,839.68 = 1,173.46 : x
2. Step 2: Convert to fraction form
   2,057.58/2,839.68 = 1,173.46/x
3. Step 3: Cross multiply
   2,057.58x = 2,839.68 × 1,173.46
4. Step 4: Simplify right side
   2,057.58x = 3,332,250.89
5. Step 5: Solve for x
   x = 3,332,250.89/2,057.58
6. Step 6: Final answer
   x = 1,619.50