Finding the Fourth Proportional to 1,821.81, 2,513.79 and 1,075.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.81 : 2,513.79 = 1,075.49 : x
2. Step 2: Convert to fraction form
   1,821.81/2,513.79 = 1,075.49/x
3. Step 3: Cross multiply
   1,821.81x = 2,513.79 × 1,075.49
4. Step 4: Simplify right side
   1,821.81x = 2,703,543.44
5. Step 5: Solve for x
   x = 2,703,543.44/1,821.81
6. Step 6: Final answer
   x = 1,483.99