Finding the Fourth Proportional to 1,446.91, 1,994.74 and 915.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.91 : 1,994.74 = 915.53 : x
2. Step 2: Convert to fraction form
   1,446.91/1,994.74 = 915.53/x
3. Step 3: Cross multiply
   1,446.91x = 1,994.74 × 915.53
4. Step 4: Simplify right side
   1,446.91x = 1,826,232.05
5. Step 5: Solve for x
   x = 1,826,232.05/1,446.91
6. Step 6: Final answer
   x = 1,262.16