Finding the Fourth Proportional to 2,029.83, 2,801.30 and 1,145.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,029.83 : 2,801.30 = 1,145.31 : x
2. Step 2: Convert to fraction form
   2,029.83/2,801.30 = 1,145.31/x
3. Step 3: Cross multiply
   2,029.83x = 2,801.30 × 1,145.31
4. Step 4: Simplify right side
   2,029.83x = 3,208,351.18
5. Step 5: Solve for x
   x = 3,208,351.18/2,029.83
6. Step 6: Final answer
   x = 1,580.60