Finding the Fourth Proportional to 1,559.37, 2,152.71 and 1,087.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.37 : 2,152.71 = 1,087.68 : x
2. Step 2: Convert to fraction form
   1,559.37/2,152.71 = 1,087.68/x
3. Step 3: Cross multiply
   1,559.37x = 2,152.71 × 1,087.68
4. Step 4: Simplify right side
   1,559.37x = 2,341,459.61
5. Step 5: Solve for x
   x = 2,341,459.61/1,559.37
6. Step 6: Final answer
   x = 1,501.54