Finding the Fourth Proportional to 2,538.06, 3,480.56 and 2,499.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.06 : 3,480.56 = 2,499.18 : x
2. Step 2: Convert to fraction form
   2,538.06/3,480.56 = 2,499.18/x
3. Step 3: Cross multiply
   2,538.06x = 3,480.56 × 2,499.18
4. Step 4: Simplify right side
   2,538.06x = 8,698,533.44
5. Step 5: Solve for x
   x = 8,698,533.44/2,538.06
6. Step 6: Final answer
   x = 3,427.24