Finding the Fourth Proportional to 2,311.02, 3,189.24 and 1,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.02 : 3,189.24 = 1,426.50 : x
2. Step 2: Convert to fraction form
   2,311.02/3,189.24 = 1,426.50/x
3. Step 3: Cross multiply
   2,311.02x = 3,189.24 × 1,426.50
4. Step 4: Simplify right side
   2,311.02x = 4,549,450.86
5. Step 5: Solve for x
   x = 4,549,450.86/2,311.02
6. Step 6: Final answer
   x = 1,968.59