Finding the Fourth Proportional to 2,057.99, 2,840.19 and 1,173.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.99 : 2,840.19 = 1,173.59 : x
2. Step 2: Convert to fraction form
   2,057.99/2,840.19 = 1,173.59/x
3. Step 3: Cross multiply
   2,057.99x = 2,840.19 × 1,173.59
4. Step 4: Simplify right side
   2,057.99x = 3,333,218.58
5. Step 5: Solve for x
   x = 3,333,218.58/2,057.99
6. Step 6: Final answer
   x = 1,619.65