Finding the Fourth Proportional to 2,311.48, 3,189.79 and 1,303.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.48 : 3,189.79 = 1,303.18 : x
2. Step 2: Convert to fraction form
   2,311.48/3,189.79 = 1,303.18/x
3. Step 3: Cross multiply
   2,311.48x = 3,189.79 × 1,303.18
4. Step 4: Simplify right side
   2,311.48x = 4,156,870.53
5. Step 5: Solve for x
   x = 4,156,870.53/2,311.48
6. Step 6: Final answer
   x = 1,798.36