Finding the Fourth Proportional to 1,696.24, 2,546.52 and 1,239.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,696.24 : 2,546.52 = 1,239.40 : x
2. Step 2: Convert to fraction form
   1,696.24/2,546.52 = 1,239.40/x
3. Step 3: Cross multiply
   1,696.24x = 2,546.52 × 1,239.40
4. Step 4: Simplify right side
   1,696.24x = 3,156,156.89
5. Step 5: Solve for x
   x = 3,156,156.89/1,696.24
6. Step 6: Final answer
   x = 1,860.68