Finding the Fourth Proportional to 1,456.06, 2,181.53 and 992.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.06 : 2,181.53 = 992.35 : x
2. Step 2: Convert to fraction form
   1,456.06/2,181.53 = 992.35/x
3. Step 3: Cross multiply
   1,456.06x = 2,181.53 × 992.35
4. Step 4: Simplify right side
   1,456.06x = 2,164,846.50
5. Step 5: Solve for x
   x = 2,164,846.50/1,456.06
6. Step 6: Final answer
   x = 1,486.78