Finding the Fourth Proportional to 1,412.76, 1,948.98 and 915.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.76 : 1,948.98 = 915.42 : x
2. Step 2: Convert to fraction form
   1,412.76/1,948.98 = 915.42/x
3. Step 3: Cross multiply
   1,412.76x = 1,948.98 × 915.42
4. Step 4: Simplify right side
   1,412.76x = 1,784,135.27
5. Step 5: Solve for x
   x = 1,784,135.27/1,412.76
6. Step 6: Final answer
   x = 1,262.87