Finding the Fourth Proportional to 1,600.56, 2,397.60 and 1,311.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,600.56 : 2,397.60 = 1,311.12 : x
2. Step 2: Convert to fraction form
   1,600.56/2,397.60 = 1,311.12/x
3. Step 3: Cross multiply
   1,600.56x = 2,397.60 × 1,311.12
4. Step 4: Simplify right side
   1,600.56x = 3,143,541.31
5. Step 5: Solve for x
   x = 3,143,541.31/1,600.56
6. Step 6: Final answer
   x = 1,964.03