Finding the Fourth Proportional to 2,232.72, 3,348.12 and 915.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,232.72 : 3,348.12 = 915.56 : x
2. Step 2: Convert to fraction form
   2,232.72/3,348.12 = 915.56/x
3. Step 3: Cross multiply
   2,232.72x = 3,348.12 × 915.56
4. Step 4: Simplify right side
   2,232.72x = 3,065,404.75
5. Step 5: Solve for x
   x = 3,065,404.75/2,232.72
6. Step 6: Final answer
   x = 1,372.95