Finding the Fourth Proportional to 1,855.87, 2,560.71 and 1,109.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,855.87 : 2,560.71 = 1,109.71 : x
2. Step 2: Convert to fraction form
   1,855.87/2,560.71 = 1,109.71/x
3. Step 3: Cross multiply
   1,855.87x = 2,560.71 × 1,109.71
4. Step 4: Simplify right side
   1,855.87x = 2,841,645.49
5. Step 5: Solve for x
   x = 2,841,645.49/1,855.87
6. Step 6: Final answer
   x = 1,531.17