Finding the Fourth Proportional to 1,872.56, 2,805.87 and 1,253.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.56 : 2,805.87 = 1,253.99 : x
2. Step 2: Convert to fraction form
   1,872.56/2,805.87 = 1,253.99/x
3. Step 3: Cross multiply
   1,872.56x = 2,805.87 × 1,253.99
4. Step 4: Simplify right side
   1,872.56x = 3,518,544.64
5. Step 5: Solve for x
   x = 3,518,544.64/1,872.56
6. Step 6: Final answer
   x = 1,879.00