Finding the Fourth Proportional to 2,196.92, 3,031.68 and 1,312.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.92 : 3,031.68 = 1,312.52 : x
2. Step 2: Convert to fraction form
   2,196.92/3,031.68 = 1,312.52/x
3. Step 3: Cross multiply
   2,196.92x = 3,031.68 × 1,312.52
4. Step 4: Simplify right side
   2,196.92x = 3,979,140.63
5. Step 5: Solve for x
   x = 3,979,140.63/2,196.92
6. Step 6: Final answer
   x = 1,811.24