Finding the Fourth Proportional to 2,582.71, 3,875.72 and 939.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,582.71 : 3,875.72 = 939.10 : x
2. Step 2: Convert to fraction form
   2,582.71/3,875.72 = 939.10/x
3. Step 3: Cross multiply
   2,582.71x = 3,875.72 × 939.10
4. Step 4: Simplify right side
   2,582.71x = 3,639,683.96
5. Step 5: Solve for x
   x = 3,639,683.96/2,582.71
6. Step 6: Final answer
   x = 1,409.25