Finding the Fourth Proportional to 2,472.72, 3,412.32 and 1,353.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.72 : 3,412.32 = 1,353.63 : x
2. Step 2: Convert to fraction form
   2,472.72/3,412.32 = 1,353.63/x
3. Step 3: Cross multiply
   2,472.72x = 3,412.32 × 1,353.63
4. Step 4: Simplify right side
   2,472.72x = 4,619,018.72
5. Step 5: Solve for x
   x = 4,619,018.72/2,472.72
6. Step 6: Final answer
   x = 1,867.99