Finding the Fourth Proportional to 2,087.58, 3,132.62 and 992.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.58 : 3,132.62 = 992.04 : x
2. Step 2: Convert to fraction form
   2,087.58/3,132.62 = 992.04/x
3. Step 3: Cross multiply
   2,087.58x = 3,132.62 × 992.04
4. Step 4: Simplify right side
   2,087.58x = 3,107,684.34
5. Step 5: Solve for x
   x = 3,107,684.34/2,087.58
6. Step 6: Final answer
   x = 1,488.65