Finding the Fourth Proportional to 2,256.72, 3,113.38 and 1,312.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.72 : 3,113.38 = 1,312.34 : x
2. Step 2: Convert to fraction form
   2,256.72/3,113.38 = 1,312.34/x
3. Step 3: Cross multiply
   2,256.72x = 3,113.38 × 1,312.34
4. Step 4: Simplify right side
   2,256.72x = 4,085,790.98
5. Step 5: Solve for x
   x = 4,085,790.98/2,256.72
6. Step 6: Final answer
   x = 1,810.50