Finding the Fourth Proportional to 1,430.63, 1,974.34 and 801.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.63 : 1,974.34 = 801.16 : x
2. Step 2: Convert to fraction form
   1,430.63/1,974.34 = 801.16/x
3. Step 3: Cross multiply
   1,430.63x = 1,974.34 × 801.16
4. Step 4: Simplify right side
   1,430.63x = 1,581,758.30
5. Step 5: Solve for x
   x = 1,581,758.30/1,430.63
6. Step 6: Final answer
   x = 1,105.64