Finding the Fourth Proportional to 1,430.38, 1,974.12 and 800.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.38 : 1,974.12 = 800.94 : x
2. Step 2: Convert to fraction form
   1,430.38/1,974.12 = 800.94/x
3. Step 3: Cross multiply
   1,430.38x = 1,974.12 × 800.94
4. Step 4: Simplify right side
   1,430.38x = 1,581,156.07
5. Step 5: Solve for x
   x = 1,581,156.07/1,430.38
6. Step 6: Final answer
   x = 1,105.41