Finding the Fourth Proportional to 2,537.78, 3,499.94 and 2,390.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,537.78 : 3,499.94 = 2,390.15 : x
2. Step 2: Convert to fraction form
   2,537.78/3,499.94 = 2,390.15/x
3. Step 3: Cross multiply
   2,537.78x = 3,499.94 × 2,390.15
4. Step 4: Simplify right side
   2,537.78x = 8,365,396.32
5. Step 5: Solve for x
   x = 8,365,396.32/2,537.78
6. Step 6: Final answer
   x = 3,296.35