Finding the Fourth Proportional to 1,430.53, 1,974.18 and 801.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.53 : 1,974.18 = 801.05 : x
2. Step 2: Convert to fraction form
   1,430.53/1,974.18 = 801.05/x
3. Step 3: Cross multiply
   1,430.53x = 1,974.18 × 801.05
4. Step 4: Simplify right side
   1,430.53x = 1,581,416.89
5. Step 5: Solve for x
   x = 1,581,416.89/1,430.53
6. Step 6: Final answer
   x = 1,105.48