Finding the Fourth Proportional to 1,559.04, 2,151.63 and 860.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.04 : 2,151.63 = 860.46 : x
2. Step 2: Convert to fraction form
   1,559.04/2,151.63 = 860.46/x
3. Step 3: Cross multiply
   1,559.04x = 2,151.63 × 860.46
4. Step 4: Simplify right side
   1,559.04x = 1,851,391.55
5. Step 5: Solve for x
   x = 1,851,391.55/1,559.04
6. Step 6: Final answer
   x = 1,187.52