Finding the Fourth Proportional to 1,239.43, 1,846.22 and 1,173.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239.43 : 1,846.22 = 1,173.69 : x
2. Step 2: Convert to fraction form
   1,239.43/1,846.22 = 1,173.69/x
3. Step 3: Cross multiply
   1,239.43x = 1,846.22 × 1,173.69
4. Step 4: Simplify right side
   1,239.43x = 2,166,892.89
5. Step 5: Solve for x
   x = 2,166,892.89/1,239.43
6. Step 6: Final answer
   x = 1,748.30