Finding the Fourth Proportional to 1,732.21, 2,389.61 and 1,259.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.21 : 2,389.61 = 1,259.37 : x
2. Step 2: Convert to fraction form
   1,732.21/2,389.61 = 1,259.37/x
3. Step 3: Cross multiply
   1,732.21x = 2,389.61 × 1,259.37
4. Step 4: Simplify right side
   1,732.21x = 3,009,403.15
5. Step 5: Solve for x
   x = 3,009,403.15/1,732.21
6. Step 6: Final answer
   x = 1,737.32