Finding the Fourth Proportional to 1,805.72, 2,491.82 and 1,059.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.72 : 2,491.82 = 1,059.80 : x
2. Step 2: Convert to fraction form
   1,805.72/2,491.82 = 1,059.80/x
3. Step 3: Cross multiply
   1,805.72x = 2,491.82 × 1,059.80
4. Step 4: Simplify right side
   1,805.72x = 2,640,830.84
5. Step 5: Solve for x
   x = 2,640,830.84/1,805.72
6. Step 6: Final answer
   x = 1,462.48