Finding the Fourth Proportional to 1,446.53, 1,996.38 and 915.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.53 : 1,996.38 = 915.71 : x
2. Step 2: Convert to fraction form
   1,446.53/1,996.38 = 915.71/x
3. Step 3: Cross multiply
   1,446.53x = 1,996.38 × 915.71
4. Step 4: Simplify right side
   1,446.53x = 1,828,095.15
5. Step 5: Solve for x
   x = 1,828,095.15/1,446.53
6. Step 6: Final answer
   x = 1,263.78