Finding the Fourth Proportional to 2,455.58, 3,682.29 and 915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,455.58 : 3,682.29 = 915.50 : x
2. Step 2: Convert to fraction form
   2,455.58/3,682.29 = 915.50/x
3. Step 3: Cross multiply
   2,455.58x = 3,682.29 × 915.50
4. Step 4: Simplify right side
   2,455.58x = 3,371,136.50
5. Step 5: Solve for x
   x = 3,371,136.50/2,455.58
6. Step 6: Final answer
   x = 1,372.85