Finding the Fourth Proportional to 2,075.55, 2,864.27 and 1,131.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.55 : 2,864.27 = 1,131.35 : x
2. Step 2: Convert to fraction form
   2,075.55/2,864.27 = 1,131.35/x
3. Step 3: Cross multiply
   2,075.55x = 2,864.27 × 1,131.35
4. Step 4: Simplify right side
   2,075.55x = 3,240,471.89
5. Step 5: Solve for x
   x = 3,240,471.89/2,075.55
6. Step 6: Final answer
   x = 1,561.26