Finding the Fourth Proportional to 1,678.46, 2,523.42 and 1,336.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.46 : 2,523.42 = 1,336.10 : x
2. Step 2: Convert to fraction form
   1,678.46/2,523.42 = 1,336.10/x
3. Step 3: Cross multiply
   1,678.46x = 2,523.42 × 1,336.10
4. Step 4: Simplify right side
   1,678.46x = 3,371,528.84
5. Step 5: Solve for x
   x = 3,371,528.84/1,678.46
6. Step 6: Final answer
   x = 2,008.71