Finding the Fourth Proportional to 1,559.72, 2,336.60 and 1,167.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.72 : 2,336.60 = 1,167.72 : x
2. Step 2: Convert to fraction form
   1,559.72/2,336.60 = 1,167.72/x
3. Step 3: Cross multiply
   1,559.72x = 2,336.60 × 1,167.72
4. Step 4: Simplify right side
   1,559.72x = 2,728,488.71
5. Step 5: Solve for x
   x = 2,728,488.71/1,559.72
6. Step 6: Final answer
   x = 1,749.35