Finding the Fourth Proportional to 1,860.56, 2,567.60 and 1,064.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,860.56 : 2,567.60 = 1,064.05 : x
2. Step 2: Convert to fraction form
   1,860.56/2,567.60 = 1,064.05/x
3. Step 3: Cross multiply
   1,860.56x = 2,567.60 × 1,064.05
4. Step 4: Simplify right side
   1,860.56x = 2,732,054.78
5. Step 5: Solve for x
   x = 2,732,054.78/1,860.56
6. Step 6: Final answer
   x = 1,468.40