Finding the Fourth Proportional to 1,167.24, 1,748.52 and 859.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.24 : 1,748.52 = 859.89 : x
2. Step 2: Convert to fraction form
   1,167.24/1,748.52 = 859.89/x
3. Step 3: Cross multiply
   1,167.24x = 1,748.52 × 859.89
4. Step 4: Simplify right side
   1,167.24x = 1,503,534.86
5. Step 5: Solve for x
   x = 1,503,534.86/1,167.24
6. Step 6: Final answer
   x = 1,288.11