Finding the Fourth Proportional to 1,409.52, 2,112.84 and 793.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.52 : 2,112.84 = 793.20 : x
2. Step 2: Convert to fraction form
   1,409.52/2,112.84 = 793.20/x
3. Step 3: Cross multiply
   1,409.52x = 2,112.84 × 793.20
4. Step 4: Simplify right side
   1,409.52x = 1,675,904.69
5. Step 5: Solve for x
   x = 1,675,904.69/1,409.52
6. Step 6: Final answer
   x = 1,188.99