Finding the Fourth Proportional to 1,861.32, 2,568.49 and 1,075.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.32 : 2,568.49 = 1,075.35 : x
2. Step 2: Convert to fraction form
   1,861.32/2,568.49 = 1,075.35/x
3. Step 3: Cross multiply
   1,861.32x = 2,568.49 × 1,075.35
4. Step 4: Simplify right side
   1,861.32x = 2,762,025.72
5. Step 5: Solve for x
   x = 2,762,025.72/1,861.32
6. Step 6: Final answer
   x = 1,483.91