Finding the Fourth Proportional to 1,861.05, 2,568.71 and 1,075.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.05 : 2,568.71 = 1,075.55 : x
2. Step 2: Convert to fraction form
   1,861.05/2,568.71 = 1,075.55/x
3. Step 3: Cross multiply
   1,861.05x = 2,568.71 × 1,075.55
4. Step 4: Simplify right side
   1,861.05x = 2,762,776.04
5. Step 5: Solve for x
   x = 2,762,776.04/1,861.05
6. Step 6: Final answer
   x = 1,484.53