Finding the Fourth Proportional to 1,687.69, 2,536.31 and 994.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,687.69 : 2,536.31 = 994.68 : x
2. Step 2: Convert to fraction form
   1,687.69/2,536.31 = 994.68/x
3. Step 3: Cross multiply
   1,687.69x = 2,536.31 × 994.68
4. Step 4: Simplify right side
   1,687.69x = 2,522,819.32
5. Step 5: Solve for x
   x = 2,522,819.32/1,687.69
6. Step 6: Final answer
   x = 1,494.84