Finding the Fourth Proportional to 2,454.50, 3,683.38 and 915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.50 : 3,683.38 = 915.50 : x
2. Step 2: Convert to fraction form
   2,454.50/3,683.38 = 915.50/x
3. Step 3: Cross multiply
   2,454.50x = 3,683.38 × 915.50
4. Step 4: Simplify right side
   2,454.50x = 3,372,134.39
5. Step 5: Solve for x
   x = 3,372,134.39/2,454.50
6. Step 6: Final answer
   x = 1,373.86