Finding the Fourth Proportional to 2,620.55, 3,929.57 and 1,232.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.55 : 3,929.57 = 1,232.72 : x
2. Step 2: Convert to fraction form
   2,620.55/3,929.57 = 1,232.72/x
3. Step 3: Cross multiply
   2,620.55x = 3,929.57 × 1,232.72
4. Step 4: Simplify right side
   2,620.55x = 4,844,052.79
5. Step 5: Solve for x
   x = 4,844,052.79/2,620.55
6. Step 6: Final answer
   x = 1,848.49