Finding the Fourth Proportional to 2,029.94, 2,801.21 and 1,145.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,029.94 : 2,801.21 = 1,145.57 : x
2. Step 2: Convert to fraction form
   2,029.94/2,801.21 = 1,145.57/x
3. Step 3: Cross multiply
   2,029.94x = 2,801.21 × 1,145.57
4. Step 4: Simplify right side
   2,029.94x = 3,208,982.14
5. Step 5: Solve for x
   x = 3,208,982.14/2,029.94
6. Step 6: Final answer
   x = 1,580.83