Finding the Fourth Proportional to 3,725.72, 5,591.27 and 1,386.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,725.72 : 5,591.27 = 1,386.05 : x
2. Step 2: Convert to fraction form
   3,725.72/5,591.27 = 1,386.05/x
3. Step 3: Cross multiply
   3,725.72x = 5,591.27 × 1,386.05
4. Step 4: Simplify right side
   3,725.72x = 7,749,744.90
5. Step 5: Solve for x
   x = 7,749,744.90/3,725.72
6. Step 6: Final answer
   x = 2,080.07