Finding the Fourth Proportional to 1,430.69, 1,974.45 and 801.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.69 : 1,974.45 = 801.27 : x
2. Step 2: Convert to fraction form
   1,430.69/1,974.45 = 801.27/x
3. Step 3: Cross multiply
   1,430.69x = 1,974.45 × 801.27
4. Step 4: Simplify right side
   1,430.69x = 1,582,057.14
5. Step 5: Solve for x
   x = 1,582,057.14/1,430.69
6. Step 6: Final answer
   x = 1,105.80