Finding the Fourth Proportional to 1,430.98, 1,974.72 and 801.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.98 : 1,974.72 = 801.50 : x
2. Step 2: Convert to fraction form
   1,430.98/1,974.72 = 801.50/x
3. Step 3: Cross multiply
   1,430.98x = 1,974.72 × 801.50
4. Step 4: Simplify right side
   1,430.98x = 1,582,738.08
5. Step 5: Solve for x
   x = 1,582,738.08/1,430.98
6. Step 6: Final answer
   x = 1,106.05