Finding the Fourth Proportional to 2,057.89, 2,839.89 and 1,173.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.89 : 2,839.89 = 1,173.66 : x
2. Step 2: Convert to fraction form
   2,057.89/2,839.89 = 1,173.66/x
3. Step 3: Cross multiply
   2,057.89x = 2,839.89 × 1,173.66
4. Step 4: Simplify right side
   2,057.89x = 3,333,065.30
5. Step 5: Solve for x
   x = 3,333,065.30/2,057.89
6. Step 6: Final answer
   x = 1,619.65