Finding the Fourth Proportional to 1,430.79, 1,974.45 and 801.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.79 : 1,974.45 = 801.32 : x
2. Step 2: Convert to fraction form
   1,430.79/1,974.45 = 801.32/x
3. Step 3: Cross multiply
   1,430.79x = 1,974.45 × 801.32
4. Step 4: Simplify right side
   1,430.79x = 1,582,166.27
5. Step 5: Solve for x
   x = 1,582,166.27/1,430.79
6. Step 6: Final answer
   x = 1,105.80