Finding the Fourth Proportional to 3,407.40, 5,112.72 and 1,559.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,407.40 : 5,112.72 = 1,559.52 : x
2. Step 2: Convert to fraction form
   3,407.40/5,112.72 = 1,559.52/x
3. Step 3: Cross multiply
   3,407.40x = 5,112.72 × 1,559.52
4. Step 4: Simplify right side
   3,407.40x = 7,973,389.09
5. Step 5: Solve for x
   x = 7,973,389.09/3,407.40
6. Step 6: Final answer
   x = 2,340.02