Finding the Fourth Proportional to 1,731.73, 2,389.03 and 1,172.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.73 : 2,389.03 = 1,172.00 : x
2. Step 2: Convert to fraction form
   1,731.73/2,389.03 = 1,172.00/x
3. Step 3: Cross multiply
   1,731.73x = 2,389.03 × 1,172.00
4. Step 4: Simplify right side
   1,731.73x = 2,799,928.28
5. Step 5: Solve for x
   x = 2,799,928.28/1,731.73
6. Step 6: Final answer
   x = 1,616.84