Finding the Fourth Proportional to 2,472.58, 3,405.76 and 1,725.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.58 : 3,405.76 = 1,725.20 : x
2. Step 2: Convert to fraction form
   2,472.58/3,405.76 = 1,725.20/x
3. Step 3: Cross multiply
   2,472.58x = 3,405.76 × 1,725.20
4. Step 4: Simplify right side
   2,472.58x = 5,875,617.15
5. Step 5: Solve for x
   x = 5,875,617.15/2,472.58
6. Step 6: Final answer
   x = 2,376.31