Finding the Fourth Proportional to 1,581.48, 2,182.89 and 992.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.48 : 2,182.89 = 992.00 : x
2. Step 2: Convert to fraction form
   1,581.48/2,182.89 = 992.00/x
3. Step 3: Cross multiply
   1,581.48x = 2,182.89 × 992.00
4. Step 4: Simplify right side
   1,581.48x = 2,165,415.97
5. Step 5: Solve for x
   x = 2,165,415.97/1,581.48
6. Step 6: Final answer
   x = 1,369.23