Finding the Fourth Proportional to 1,726.72, 2,591.63 and 1,170.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.72 : 2,591.63 = 1,170.08 : x
2. Step 2: Convert to fraction form
   1,726.72/2,591.63 = 1,170.08/x
3. Step 3: Cross multiply
   1,726.72x = 2,591.63 × 1,170.08
4. Step 4: Simplify right side
   1,726.72x = 3,032,409.73
5. Step 5: Solve for x
   x = 3,032,409.73/1,726.72
6. Step 6: Final answer
   x = 1,756.17