Finding the Fourth Proportional to 2,453.58, 3,679.29 and 913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.58 : 3,679.29 = 913.50 : x
2. Step 2: Convert to fraction form
   2,453.58/3,679.29 = 913.50/x
3. Step 3: Cross multiply
   2,453.58x = 3,679.29 × 913.50
4. Step 4: Simplify right side
   2,453.58x = 3,361,031.42
5. Step 5: Solve for x
   x = 3,361,031.42/2,453.58
6. Step 6: Final answer
   x = 1,369.85