Finding the Fourth Proportional to 1,920.65, 2,650.53 and 1,081.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.65 : 2,650.53 = 1,081.34 : x
2. Step 2: Convert to fraction form
   1,920.65/2,650.53 = 1,081.34/x
3. Step 3: Cross multiply
   1,920.65x = 2,650.53 × 1,081.34
4. Step 4: Simplify right side
   1,920.65x = 2,866,110.86
5. Step 5: Solve for x
   x = 2,866,110.86/1,920.65
6. Step 6: Final answer
   x = 1,492.26