Finding the Fourth Proportional to 2,239.60, 3,086.24 and 1,885.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,239.60 : 3,086.24 = 1,885.58 : x
2. Step 2: Convert to fraction form
   2,239.60/3,086.24 = 1,885.58/x
3. Step 3: Cross multiply
   2,239.60x = 3,086.24 × 1,885.58
4. Step 4: Simplify right side
   2,239.60x = 5,819,338.17
5. Step 5: Solve for x
   x = 5,819,338.17/2,239.60
6. Step 6: Final answer
   x = 2,598.39