Finding the Fourth Proportional to 1,732.79, 2,390.49 and 1,173.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.79 : 2,390.49 = 1,173.07 : x
2. Step 2: Convert to fraction form
   1,732.79/2,390.49 = 1,173.07/x
3. Step 3: Cross multiply
   1,732.79x = 2,390.49 × 1,173.07
4. Step 4: Simplify right side
   1,732.79x = 2,804,200.15
5. Step 5: Solve for x
   x = 2,804,200.15/1,732.79
6. Step 6: Final answer
   x = 1,618.32