Finding the Fourth Proportional to 2,422.05, 3,340.49 and 1,538.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,422.05 : 3,340.49 = 1,538.07 : x
2. Step 2: Convert to fraction form
   2,422.05/3,340.49 = 1,538.07/x
3. Step 3: Cross multiply
   2,422.05x = 3,340.49 × 1,538.07
4. Step 4: Simplify right side
   2,422.05x = 5,137,899.76
5. Step 5: Solve for x
   x = 5,137,899.76/2,422.05
6. Step 6: Final answer
   x = 2,121.30