Finding the Fourth Proportional to 2,075.91, 2,864.76 and 1,131.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.91 : 2,864.76 = 1,131.70 : x
2. Step 2: Convert to fraction form
   2,075.91/2,864.76 = 1,131.70/x
3. Step 3: Cross multiply
   2,075.91x = 2,864.76 × 1,131.70
4. Step 4: Simplify right side
   2,075.91x = 3,242,054.10
5. Step 5: Solve for x
   x = 3,242,054.10/2,075.91
6. Step 6: Final answer
   x = 1,561.75