Finding the Fourth Proportional to 1,358.56, 1,870.86 and 1,183.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.56 : 1,870.86 = 1,183.60 : x
2. Step 2: Convert to fraction form
   1,358.56/1,870.86 = 1,183.60/x
3. Step 3: Cross multiply
   1,358.56x = 1,870.86 × 1,183.60
4. Step 4: Simplify right side
   1,358.56x = 2,214,349.90
5. Step 5: Solve for x
   x = 2,214,349.90/1,358.56
6. Step 6: Final answer
   x = 1,629.92