Finding the Fourth Proportional to 2,301.23, 3,453.82 and 915.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,301.23 : 3,453.82 = 915.55 : x
2. Step 2: Convert to fraction form
   2,301.23/3,453.82 = 915.55/x
3. Step 3: Cross multiply
   2,301.23x = 3,453.82 × 915.55
4. Step 4: Simplify right side
   2,301.23x = 3,162,133.98
5. Step 5: Solve for x
   x = 3,162,133.98/2,301.23
6. Step 6: Final answer
   x = 1,374.10