Finding the Fourth Proportional to 1,851.69, 2,555.37 and 1,065.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.69 : 2,555.37 = 1,065.80 : x
2. Step 2: Convert to fraction form
   1,851.69/2,555.37 = 1,065.80/x
3. Step 3: Cross multiply
   1,851.69x = 2,555.37 × 1,065.80
4. Step 4: Simplify right side
   1,851.69x = 2,723,500.57
5. Step 5: Solve for x
   x = 2,723,500.57/1,851.69
6. Step 6: Final answer
   x = 1,470.82