Finding the Fourth Proportional to 1,081.94, 1,493.01 and 609.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.94 : 1,493.01 = 609.91 : x
2. Step 2: Convert to fraction form
   1,081.94/1,493.01 = 609.91/x
3. Step 3: Cross multiply
   1,081.94x = 1,493.01 × 609.91
4. Step 4: Simplify right side
   1,081.94x = 910,598.00
5. Step 5: Solve for x
   x = 910,598.00/1,081.94
6. Step 6: Final answer
   x = 841.64