Finding the Fourth Proportional to 2,375.89, 3,564.61 and 915.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,375.89 : 3,564.61 = 915.05 : x
2. Step 2: Convert to fraction form
   2,375.89/3,564.61 = 915.05/x
3. Step 3: Cross multiply
   2,375.89x = 3,564.61 × 915.05
4. Step 4: Simplify right side
   2,375.89x = 3,261,796.38
5. Step 5: Solve for x
   x = 3,261,796.38/2,375.89
6. Step 6: Final answer
   x = 1,372.87