Finding the Fourth Proportional to 1,601.08, 2,399.34 and 1,087

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.08 : 2,399.34 = 1,087 : x
2. Step 2: Convert to fraction form
   1,601.08/2,399.34 = 1,087/x
3. Step 3: Cross multiply
   1,601.08x = 2,399.34 × 1,087
4. Step 4: Simplify right side
   1,601.08x = 2,608,082.58
5. Step 5: Solve for x
   x = 2,608,082.58/1,601.08
6. Step 6: Final answer
   x = 1,628.95