Finding the Fourth Proportional to 2,644.76, 3,967.56 and 913.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.76 : 3,967.56 = 913.52 : x
2. Step 2: Convert to fraction form
   2,644.76/3,967.56 = 913.52/x
3. Step 3: Cross multiply
   2,644.76x = 3,967.56 × 913.52
4. Step 4: Simplify right side
   2,644.76x = 3,624,445.41
5. Step 5: Solve for x
   x = 3,624,445.41/2,644.76
6. Step 6: Final answer
   x = 1,370.43