Finding the Fourth Proportional to 1,428.77, 1,971.74 and 799.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428.77 : 1,971.74 = 799.27 : x
2. Step 2: Convert to fraction form
   1,428.77/1,971.74 = 799.27/x
3. Step 3: Cross multiply
   1,428.77x = 1,971.74 × 799.27
4. Step 4: Simplify right side
   1,428.77x = 1,575,954.10
5. Step 5: Solve for x
   x = 1,575,954.10/1,428.77
6. Step 6: Final answer
   x = 1,103.02