Finding the Fourth Proportional to 2,058.05, 2,839.84 and 1,173.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.05 : 2,839.84 = 1,173.80 : x
2. Step 2: Convert to fraction form
   2,058.05/2,839.84 = 1,173.80/x
3. Step 3: Cross multiply
   2,058.05x = 2,839.84 × 1,173.80
4. Step 4: Simplify right side
   2,058.05x = 3,333,387.06
5. Step 5: Solve for x
   x = 3,333,387.06/2,058.05
6. Step 6: Final answer
   x = 1,619.69