Finding the Fourth Proportional to 2,196.24, 3,031.08 and 1,312.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.24 : 3,031.08 = 1,312.04 : x
2. Step 2: Convert to fraction form
   2,196.24/3,031.08 = 1,312.04/x
3. Step 3: Cross multiply
   2,196.24x = 3,031.08 × 1,312.04
4. Step 4: Simplify right side
   2,196.24x = 3,976,898.20
5. Step 5: Solve for x
   x = 3,976,898.20/2,196.24
6. Step 6: Final answer
   x = 1,810.78