Finding the Fourth Proportional to 2,310.92, 3,189.12 and 1,263.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.92 : 3,189.12 = 1,263.05 : x
2. Step 2: Convert to fraction form
   2,310.92/3,189.12 = 1,263.05/x
3. Step 3: Cross multiply
   2,310.92x = 3,189.12 × 1,263.05
4. Step 4: Simplify right side
   2,310.92x = 4,028,018.02
5. Step 5: Solve for x
   x = 4,028,018.02/2,310.92
6. Step 6: Final answer
   x = 1,743.04