Finding the Fourth Proportional to 1,504.89, 2,076.98 and 915.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,504.89 : 2,076.98 = 915.35 : x
2. Step 2: Convert to fraction form
   1,504.89/2,076.98 = 915.35/x
3. Step 3: Cross multiply
   1,504.89x = 2,076.98 × 915.35
4. Step 4: Simplify right side
   1,504.89x = 1,901,148.68
5. Step 5: Solve for x
   x = 1,901,148.68/1,504.89
6. Step 6: Final answer
   x = 1,263.31