Finding the Fourth Proportional to 2,818.91, 3,890.94 and 1,824.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.91 : 3,890.94 = 1,824.25 : x
2. Step 2: Convert to fraction form
   2,818.91/3,890.94 = 1,824.25/x
3. Step 3: Cross multiply
   2,818.91x = 3,890.94 × 1,824.25
4. Step 4: Simplify right side
   2,818.91x = 7,098,051.70
5. Step 5: Solve for x
   x = 7,098,051.70/2,818.91
6. Step 6: Final answer
   x = 2,518.02