Finding the Fourth Proportional to 2,095.43, 3,138.50 and 1,312.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.43 : 3,138.50 = 1,312.88 : x
2. Step 2: Convert to fraction form
   2,095.43/3,138.50 = 1,312.88/x
3. Step 3: Cross multiply
   2,095.43x = 3,138.50 × 1,312.88
4. Step 4: Simplify right side
   2,095.43x = 4,120,451.62
5. Step 5: Solve for x
   x = 4,120,451.62/2,095.43
6. Step 6: Final answer
   x = 1,966.40