Finding the Fourth Proportional to 1,262.86, 1,742.73 and 864.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,262.86 : 1,742.73 = 864.52 : x
2. Step 2: Convert to fraction form
   1,262.86/1,742.73 = 864.52/x
3. Step 3: Cross multiply
   1,262.86x = 1,742.73 × 864.52
4. Step 4: Simplify right side
   1,262.86x = 1,506,617.15
5. Step 5: Solve for x
   x = 1,506,617.15/1,262.86
6. Step 6: Final answer
   x = 1,193.02