Finding the Fourth Proportional to 2,580.86, 3,871.87 and 937.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.86 : 3,871.87 = 937.37 : x
2. Step 2: Convert to fraction form
   2,580.86/3,871.87 = 937.37/x
3. Step 3: Cross multiply
   2,580.86x = 3,871.87 × 937.37
4. Step 4: Simplify right side
   2,580.86x = 3,629,374.78
5. Step 5: Solve for x
   x = 3,629,374.78/2,580.86
6. Step 6: Final answer
   x = 1,406.27