Finding the Fourth Proportional to 1,382.50, 1,906.49 and 1,173.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.50 : 1,906.49 = 1,173.25 : x
2. Step 2: Convert to fraction form
   1,382.50/1,906.49 = 1,173.25/x
3. Step 3: Cross multiply
   1,382.50x = 1,906.49 × 1,173.25
4. Step 4: Simplify right side
   1,382.50x = 2,236,773.99
5. Step 5: Solve for x
   x = 2,236,773.99/1,382.50
6. Step 6: Final answer
   x = 1,617.93