Finding the Fourth Proportional to 2,390.49, 3,578.82 and 1,607.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.49 : 3,578.82 = 1,607.79 : x
2. Step 2: Convert to fraction form
   2,390.49/3,578.82 = 1,607.79/x
3. Step 3: Cross multiply
   2,390.49x = 3,578.82 × 1,607.79
4. Step 4: Simplify right side
   2,390.49x = 5,753,980.02
5. Step 5: Solve for x
   x = 5,753,980.02/2,390.49
6. Step 6: Final answer
   x = 2,407.03