Finding the Fourth Proportional to 1,861.01, 2,568.10 and 1,075.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.01 : 2,568.10 = 1,075.31 : x
2. Step 2: Convert to fraction form
   1,861.01/2,568.10 = 1,075.31/x
3. Step 3: Cross multiply
   1,861.01x = 2,568.10 × 1,075.31
4. Step 4: Simplify right side
   1,861.01x = 2,761,503.61
5. Step 5: Solve for x
   x = 2,761,503.61/1,861.01
6. Step 6: Final answer
   x = 1,483.87