Finding the Fourth Proportional to 1,582.72, 2,181.94 and 992.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,582.72 : 2,181.94 = 992.84 : x
2. Step 2: Convert to fraction form
   1,582.72/2,181.94 = 992.84/x
3. Step 3: Cross multiply
   1,582.72x = 2,181.94 × 992.84
4. Step 4: Simplify right side
   1,582.72x = 2,166,317.31
5. Step 5: Solve for x
   x = 2,166,317.31/1,582.72
6. Step 6: Final answer
   x = 1,368.73