Finding the Fourth Proportional to 1,430.29, 1,973.61 and 800.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.29 : 1,973.61 = 800.76 : x
2. Step 2: Convert to fraction form
   1,430.29/1,973.61 = 800.76/x
3. Step 3: Cross multiply
   1,430.29x = 1,973.61 × 800.76
4. Step 4: Simplify right side
   1,430.29x = 1,580,387.94
5. Step 5: Solve for x
   x = 1,580,387.94/1,430.29
6. Step 6: Final answer
   x = 1,104.94