Finding the Fourth Proportional to 2,075.76, 2,864.58 and 1,131.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.76 : 2,864.58 = 1,131.57 : x
2. Step 2: Convert to fraction form
   2,075.76/2,864.58 = 1,131.57/x
3. Step 3: Cross multiply
   2,075.76x = 2,864.58 × 1,131.57
4. Step 4: Simplify right side
   2,075.76x = 3,241,472.79
5. Step 5: Solve for x
   x = 3,241,472.79/2,075.76
6. Step 6: Final answer
   x = 1,561.58