Finding the Fourth Proportional to 2,522.25, 3,478.64 and 2,238.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.25 : 3,478.64 = 2,238.88 : x
2. Step 2: Convert to fraction form
   2,522.25/3,478.64 = 2,238.88/x
3. Step 3: Cross multiply
   2,522.25x = 3,478.64 × 2,238.88
4. Step 4: Simplify right side
   2,522.25x = 7,788,237.63
5. Step 5: Solve for x
   x = 7,788,237.63/2,522.25
6. Step 6: Final answer
   x = 3,087.81