Finding the Fourth Proportional to 2,472.84, 3,412.46 and 1,353.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.84 : 3,412.46 = 1,353.78 : x
2. Step 2: Convert to fraction form
   2,472.84/3,412.46 = 1,353.78/x
3. Step 3: Cross multiply
   2,472.84x = 3,412.46 × 1,353.78
4. Step 4: Simplify right side
   2,472.84x = 4,619,720.10
5. Step 5: Solve for x
   x = 4,619,720.10/2,472.84
6. Step 6: Final answer
   x = 1,868.18