Finding the Fourth Proportional to 1,081.95, 1,493.06 and 609.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.95 : 1,493.06 = 609.86 : x
2. Step 2: Convert to fraction form
   1,081.95/1,493.06 = 609.86/x
3. Step 3: Cross multiply
   1,081.95x = 1,493.06 × 609.86
4. Step 4: Simplify right side
   1,081.95x = 910,547.06
5. Step 5: Solve for x
   x = 910,547.06/1,081.95
6. Step 6: Final answer
   x = 841.58