Finding the Fourth Proportional to 1,081.53, 1,492.37 and 609.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.53 : 1,492.37 = 609.37 : x
2. Step 2: Convert to fraction form
   1,081.53/1,492.37 = 609.37/x
3. Step 3: Cross multiply
   1,081.53x = 1,492.37 × 609.37
4. Step 4: Simplify right side
   1,081.53x = 909,405.51
5. Step 5: Solve for x
   x = 909,405.51/1,081.53
6. Step 6: Final answer
   x = 840.85