Finding the Fourth Proportional to 3,842.55, 5,300.78 and 2,958.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,842.55 : 5,300.78 = 2,958.03 : x
2. Step 2: Convert to fraction form
   3,842.55/5,300.78 = 2,958.03/x
3. Step 3: Cross multiply
   3,842.55x = 5,300.78 × 2,958.03
4. Step 4: Simplify right side
   3,842.55x = 15,679,851.47
5. Step 5: Solve for x
   x = 15,679,851.47/3,842.55
6. Step 6: Final answer
   x = 4,080.58