Finding the Fourth Proportional to 2,582.58, 3,872.94 and 938.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,582.58 : 3,872.94 = 938.70 : x
2. Step 2: Convert to fraction form
   2,582.58/3,872.94 = 938.70/x
3. Step 3: Cross multiply
   2,582.58x = 3,872.94 × 938.70
4. Step 4: Simplify right side
   2,582.58x = 3,635,528.78
5. Step 5: Solve for x
   x = 3,635,528.78/2,582.58
6. Step 6: Final answer
   x = 1,407.71