Finding the Fourth Proportional to 1,081.80, 1,492.82 and 662.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.80 : 1,492.82 = 662.22 : x
2. Step 2: Convert to fraction form
   1,081.80/1,492.82 = 662.22/x
3. Step 3: Cross multiply
   1,081.80x = 1,492.82 × 662.22
4. Step 4: Simplify right side
   1,081.80x = 988,575.26
5. Step 5: Solve for x
   x = 988,575.26/1,081.80
6. Step 6: Final answer
   x = 913.82