Finding the Fourth Proportional to 1,409.12, 2,111.52 and 792.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.12 : 2,111.52 = 792.08 : x
2. Step 2: Convert to fraction form
   1,409.12/2,111.52 = 792.08/x
3. Step 3: Cross multiply
   1,409.12x = 2,111.52 × 792.08
4. Step 4: Simplify right side
   1,409.12x = 1,672,492.76
5. Step 5: Solve for x
   x = 1,672,492.76/1,409.12
6. Step 6: Final answer
   x = 1,186.91