Finding the Fourth Proportional to 1,819.72, 2,509.27 and 1,190.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.72 : 2,509.27 = 1,190.79 : x
2. Step 2: Convert to fraction form
   1,819.72/2,509.27 = 1,190.79/x
3. Step 3: Cross multiply
   1,819.72x = 2,509.27 × 1,190.79
4. Step 4: Simplify right side
   1,819.72x = 2,988,013.62
5. Step 5: Solve for x
   x = 2,988,013.62/1,819.72
6. Step 6: Final answer
   x = 1,642.02