Finding the Fourth Proportional to 3,872.52, 5,809.82 and 1,275.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,872.52 : 5,809.82 = 1,275.56 : x
2. Step 2: Convert to fraction form
   3,872.52/5,809.82 = 1,275.56/x
3. Step 3: Cross multiply
   3,872.52x = 5,809.82 × 1,275.56
4. Step 4: Simplify right side
   3,872.52x = 7,410,774.00
5. Step 5: Solve for x
   x = 7,410,774.00/3,872.52
6. Step 6: Final answer
   x = 1,913.68