Finding the Fourth Proportional to 1,081.58, 1,492.63 and 609.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.58 : 1,492.63 = 609.46 : x
2. Step 2: Convert to fraction form
   1,081.58/1,492.63 = 609.46/x
3. Step 3: Cross multiply
   1,081.58x = 1,492.63 × 609.46
4. Step 4: Simplify right side
   1,081.58x = 909,689.88
5. Step 5: Solve for x
   x = 909,689.88/1,081.58
6. Step 6: Final answer
   x = 841.07