Finding the Fourth Proportional to 1,946.76, 2,686.10 and 1,317.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,946.76 : 2,686.10 = 1,317.38 : x
2. Step 2: Convert to fraction form
   1,946.76/2,686.10 = 1,317.38/x
3. Step 3: Cross multiply
   1,946.76x = 2,686.10 × 1,317.38
4. Step 4: Simplify right side
   1,946.76x = 3,538,614.42
5. Step 5: Solve for x
   x = 3,538,614.42/1,946.76
6. Step 6: Final answer
   x = 1,817.69