Finding the Fourth Proportional to 1,256.96, 1,733.72 and 864.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,256.96 : 1,733.72 = 864.92 : x
2. Step 2: Convert to fraction form
   1,256.96/1,733.72 = 864.92/x
3. Step 3: Cross multiply
   1,256.96x = 1,733.72 × 864.92
4. Step 4: Simplify right side
   1,256.96x = 1,499,529.10
5. Step 5: Solve for x
   x = 1,499,529.10/1,256.96
6. Step 6: Final answer
   x = 1,192.98