Finding the Fourth Proportional to 2,801.06, 3,868.20 and 2,538.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.06 : 3,868.20 = 2,538.62 : x
2. Step 2: Convert to fraction form
   2,801.06/3,868.20 = 2,538.62/x
3. Step 3: Cross multiply
   2,801.06x = 3,868.20 × 2,538.62
4. Step 4: Simplify right side
   2,801.06x = 9,819,889.88
5. Step 5: Solve for x
   x = 9,819,889.88/2,801.06
6. Step 6: Final answer
   x = 3,505.78