Finding the Fourth Proportional to 1,819.72, 2,511.33 and 1,023.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.72 : 2,511.33 = 1,023.12 : x
2. Step 2: Convert to fraction form
   1,819.72/2,511.33 = 1,023.12/x
3. Step 3: Cross multiply
   1,819.72x = 2,511.33 × 1,023.12
4. Step 4: Simplify right side
   1,819.72x = 2,569,391.95
5. Step 5: Solve for x
   x = 2,569,391.95/1,819.72
6. Step 6: Final answer
   x = 1,411.97