Finding the Fourth Proportional to 1,429.57, 1,972.84 and 800.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.57 : 1,972.84 = 800.07 : x
2. Step 2: Convert to fraction form
   1,429.57/1,972.84 = 800.07/x
3. Step 3: Cross multiply
   1,429.57x = 1,972.84 × 800.07
4. Step 4: Simplify right side
   1,429.57x = 1,578,410.10
5. Step 5: Solve for x
   x = 1,578,410.10/1,429.57
6. Step 6: Final answer
   x = 1,104.12