Finding the Fourth Proportional to 2,478.33, 3,716.58 and 1,438.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.33 : 3,716.58 = 1,438.59 : x
2. Step 2: Convert to fraction form
   2,478.33/3,716.58 = 1,438.59/x
3. Step 3: Cross multiply
   2,478.33x = 3,716.58 × 1,438.59
4. Step 4: Simplify right side
   2,478.33x = 5,346,654.15
5. Step 5: Solve for x
   x = 5,346,654.15/2,478.33
6. Step 6: Final answer
   x = 2,157.36