Finding the Fourth Proportional to 2,620.04, 3,929.00 and 1,059.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.04 : 3,929.00 = 1,059.72 : x
2. Step 2: Convert to fraction form
   2,620.04/3,929.00 = 1,059.72/x
3. Step 3: Cross multiply
   2,620.04x = 3,929.00 × 1,059.72
4. Step 4: Simplify right side
   2,620.04x = 4,163,634.58
5. Step 5: Solve for x
   x = 4,163,634.58/2,620.04
6. Step 6: Final answer
   x = 1,589.15