Finding the Fourth Proportional to 2,075.28, 2,864.04 and 1,191.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.28 : 2,864.04 = 1,191.12 : x
2. Step 2: Convert to fraction form
   2,075.28/2,864.04 = 1,191.12/x
3. Step 3: Cross multiply
   2,075.28x = 2,864.04 × 1,191.12
4. Step 4: Simplify right side
   2,075.28x = 3,411,415.32
5. Step 5: Solve for x
   x = 3,411,415.32/2,075.28
6. Step 6: Final answer
   x = 1,643.83