Finding the Fourth Proportional to 1,685.92, 2,326.32 and 987.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.92 : 2,326.32 = 987.52 : x
2. Step 2: Convert to fraction form
   1,685.92/2,326.32 = 987.52/x
3. Step 3: Cross multiply
   1,685.92x = 2,326.32 × 987.52
4. Step 4: Simplify right side
   1,685.92x = 2,297,287.53
5. Step 5: Solve for x
   x = 2,297,287.53/1,685.92
6. Step 6: Final answer
   x = 1,362.63