Finding the Fourth Proportional to 2,069.52, 3,105.48 and 915.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.52 : 3,105.48 = 915.24 : x
2. Step 2: Convert to fraction form
   2,069.52/3,105.48 = 915.24/x
3. Step 3: Cross multiply
   2,069.52x = 3,105.48 × 915.24
4. Step 4: Simplify right side
   2,069.52x = 2,842,259.52
5. Step 5: Solve for x
   x = 2,842,259.52/2,069.52
6. Step 6: Final answer
   x = 1,373.39