Finding the Fourth Proportional to 1,409.30, 2,111.89 and 793.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.30 : 2,111.89 = 793.18 : x
2. Step 2: Convert to fraction form
   1,409.30/2,111.89 = 793.18/x
3. Step 3: Cross multiply
   1,409.30x = 2,111.89 × 793.18
4. Step 4: Simplify right side
   1,409.30x = 1,675,108.91
5. Step 5: Solve for x
   x = 1,675,108.91/1,409.30
6. Step 6: Final answer
   x = 1,188.61