Finding the Fourth Proportional to 1,861.83, 2,568.78 and 1,075.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.83 : 2,568.78 = 1,075.86 : x
2. Step 2: Convert to fraction form
   1,861.83/2,568.78 = 1,075.86/x
3. Step 3: Cross multiply
   1,861.83x = 2,568.78 × 1,075.86
4. Step 4: Simplify right side
   1,861.83x = 2,763,647.65
5. Step 5: Solve for x
   x = 2,763,647.65/1,861.83
6. Step 6: Final answer
   x = 1,484.37