Finding the Fourth Proportional to 2,075.90, 2,864.72 and 1,131.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.90 : 2,864.72 = 1,131.68 : x
2. Step 2: Convert to fraction form
   2,075.90/2,864.72 = 1,131.68/x
3. Step 3: Cross multiply
   2,075.90x = 2,864.72 × 1,131.68
4. Step 4: Simplify right side
   2,075.90x = 3,241,946.33
5. Step 5: Solve for x
   x = 3,241,946.33/2,075.90
6. Step 6: Final answer
   x = 1,561.71