Finding the Fourth Proportional to 2,580.37, 3,870.71 and 937.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.37 : 3,870.71 = 937.09 : x
2. Step 2: Convert to fraction form
   2,580.37/3,870.71 = 937.09/x
3. Step 3: Cross multiply
   2,580.37x = 3,870.71 × 937.09
4. Step 4: Simplify right side
   2,580.37x = 3,627,203.63
5. Step 5: Solve for x
   x = 3,627,203.63/2,580.37
6. Step 6: Final answer
   x = 1,405.69