Finding the Fourth Proportional to 1,790.16, 2,469.30 and 1,081.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.16 : 2,469.30 = 1,081.62 : x
2. Step 2: Convert to fraction form
   1,790.16/2,469.30 = 1,081.62/x
3. Step 3: Cross multiply
   1,790.16x = 2,469.30 × 1,081.62
4. Step 4: Simplify right side
   1,790.16x = 2,670,844.27
5. Step 5: Solve for x
   x = 2,670,844.27/1,790.16
6. Step 6: Final answer
   x = 1,491.96