Finding the Fourth Proportional to 2,715.12, 4,075.92 and 1,419.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.12 : 4,075.92 = 1,419.12 : x
2. Step 2: Convert to fraction form
   2,715.12/4,075.92 = 1,419.12/x
3. Step 3: Cross multiply
   2,715.12x = 4,075.92 × 1,419.12
4. Step 4: Simplify right side
   2,715.12x = 5,784,219.59
5. Step 5: Solve for x
   x = 5,784,219.59/2,715.12
6. Step 6: Final answer
   x = 2,130.37