Finding the Fourth Proportional to 1,861.21, 2,568.42 and 1,075.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.21 : 2,568.42 = 1,075.24 : x
2. Step 2: Convert to fraction form
   1,861.21/2,568.42 = 1,075.24/x
3. Step 3: Cross multiply
   1,861.21x = 2,568.42 × 1,075.24
4. Step 4: Simplify right side
   1,861.21x = 2,761,667.92
5. Step 5: Solve for x
   x = 2,761,667.92/1,861.21
6. Step 6: Final answer
   x = 1,483.80