Finding the Fourth Proportional to 2,057.39, 2,839.43 and 1,173.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.39 : 2,839.43 = 1,173.32 : x
2. Step 2: Convert to fraction form
   2,057.39/2,839.43 = 1,173.32/x
3. Step 3: Cross multiply
   2,057.39x = 2,839.43 × 1,173.32
4. Step 4: Simplify right side
   2,057.39x = 3,331,539.94
5. Step 5: Solve for x
   x = 3,331,539.94/2,057.39
6. Step 6: Final answer
   x = 1,619.31