Finding the Fourth Proportional to 2,351.84, 3,245.56 and 1,605.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,351.84 : 3,245.56 = 1,605.78 : x
2. Step 2: Convert to fraction form
   2,351.84/3,245.56 = 1,605.78/x
3. Step 3: Cross multiply
   2,351.84x = 3,245.56 × 1,605.78
4. Step 4: Simplify right side
   2,351.84x = 5,211,651.32
5. Step 5: Solve for x
   x = 5,211,651.32/2,351.84
6. Step 6: Final answer
   x = 2,215.99