Finding the Fourth Proportional to 2,307.17, 3,183.90 and 1,259.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,307.17 : 3,183.90 = 1,259.30 : x
2. Step 2: Convert to fraction form
   2,307.17/3,183.90 = 1,259.30/x
3. Step 3: Cross multiply
   2,307.17x = 3,183.90 × 1,259.30
4. Step 4: Simplify right side
   2,307.17x = 4,009,485.27
5. Step 5: Solve for x
   x = 4,009,485.27/2,307.17
6. Step 6: Final answer
   x = 1,737.84