Finding the Fourth Proportional to 2,012.02, 3,016.90 and 915.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.02 : 3,016.90 = 915.04 : x
2. Step 2: Convert to fraction form
   2,012.02/3,016.90 = 915.04/x
3. Step 3: Cross multiply
   2,012.02x = 3,016.90 × 915.04
4. Step 4: Simplify right side
   2,012.02x = 2,760,584.18
5. Step 5: Solve for x
   x = 2,760,584.18/2,012.02
6. Step 6: Final answer
   x = 1,372.05