Finding the Fourth Proportional to 2,580.53, 3,871.37 and 937.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.53 : 3,871.37 = 937.07 : x
2. Step 2: Convert to fraction form
   2,580.53/3,871.37 = 937.07/x
3. Step 3: Cross multiply
   2,580.53x = 3,871.37 × 937.07
4. Step 4: Simplify right side
   2,580.53x = 3,627,720.64
5. Step 5: Solve for x
   x = 3,627,720.64/2,580.53
6. Step 6: Final answer
   x = 1,405.81