Finding the Fourth Proportional to 1,443.51, 1,992.06 and 814.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.51 : 1,992.06 = 814.07 : x
2. Step 2: Convert to fraction form
   1,443.51/1,992.06 = 814.07/x
3. Step 3: Cross multiply
   1,443.51x = 1,992.06 × 814.07
4. Step 4: Simplify right side
   1,443.51x = 1,621,666.32
5. Step 5: Solve for x
   x = 1,621,666.32/1,443.51
6. Step 6: Final answer
   x = 1,123.42