Finding the Fourth Proportional to 2,581.39, 3,872.90 and 937.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.39 : 3,872.90 = 937.50 : x
2. Step 2: Convert to fraction form
   2,581.39/3,872.90 = 937.50/x
3. Step 3: Cross multiply
   2,581.39x = 3,872.90 × 937.50
4. Step 4: Simplify right side
   2,581.39x = 3,630,843.75
5. Step 5: Solve for x
   x = 3,630,843.75/2,581.39
6. Step 6: Final answer
   x = 1,406.55