Finding the Fourth Proportional to 2,433.12, 3,647.52 and 872.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,433.12 : 3,647.52 = 872.40 : x
2. Step 2: Convert to fraction form
   2,433.12/3,647.52 = 872.40/x
3. Step 3: Cross multiply
   2,433.12x = 3,647.52 × 872.40
4. Step 4: Simplify right side
   2,433.12x = 3,182,096.45
5. Step 5: Solve for x
   x = 3,182,096.45/2,433.12
6. Step 6: Final answer
   x = 1,307.83